Posts tagged “Tesla”
When I built my electric bicycle back in 2007, I had been waiting for a battery that was less volatile than what had been available. I didn’t want to risk having a fireball under my seat. Tesla traded volatility for power density.
I think electric cars are great for all kinds of reasons, which is why I bought one in 2011. But like any car, they are not created equal, and as marketers begin the process of differentiating them to get us to buy them, that inequality will grow and diversify as it has for conventional cars. And for any fellow electric car enthusiasts out there who think electric cars are going to make a significant dent in carbon emissions in the foreseeable future, read Robert Rapier’s article on that subject. Even a strongly biased study by the UCS shows that electric cars, on average, presently produce about half of the emissions of conventional cars in a cradle-to-grave analysis. Eliminating fossil fuels instead of nuclear from our energy mix will improve that over time. CONTINUE»
I found this study on Nature Energy, which I subscribe to: Moving beyond alternative fuel hype to decarbonize transportation.
Although I disagree with the study’s main conclusion, the above chart they put together (which I have modified) was of interest to me because it suggests that things are finally starting to happen when it comes to electrification of transportation. CONTINUE»
The July announcement from Chevy of its upcoming $38K, 200-mile range Bolt electric car may be of similar historical importance to Nissan’s announcement back in 2011 of the Leaf.
Thanks to Tesla’s new battery packs, Russ Finley asks if we can not only stop building more hydro electric dams, but also remove the existing ones to save what remains of the last river ecosystems, restore the world’s salmon runs.
Has anyone else noticed how much a Tesla Model S looks like a Jaguar XF (pictured below)? One of my neighbors drives a Tesla Model S. I was following him down the street a few weeks ago and heard his tires squeak three times in two blocks. Adequate acceleration to maneuver in traffic can enhance overall safety but too much acceleration potential can be dangerous, especially in the wrong hands. Not sure I’d want that temptation.
Tesla is dead on with their promotion of fast charging stations. The ubiquitous 240 volt chargers are next to worthless simply because they take too long. A high voltage fast charger can provide a significant charge in a matter of minutes. I recently deliberately drove my Leaf beyond its range because we needed two cars to get supplies to a wedding. My plan was to stop at a charge station on the way home for a few hours to get enough charge to finish the trip. The rest of the family came home in our Prius.
Provision of an after-market battery pack is another electric car first and an all important step for electric cars to gain greater market share. Leaf owners now have the option to upgrade to a new battery (with new, more heat resistant chemistry) when the old one wears out, or of selling their car and letting someone else put a new battery in it. An electric car with a worn out battery wouldn’t have much resale value if you couldn’t replace the battery. The existence of a reasonably priced battery replacement might stimulate sales by putting at ease any prospective customers concerned about how they would sell their electric car once its battery wore out.
Concerns Prompted by Tesla Fires
Several vehicle fires involving Tesla’s new high-end Model S sedan have attracted a great deal of media scrutiny. Two of the three reported incidents are now under investigation by the National Highway Traffic Safety Administration (NHTSA). Yet while the company’s founder, Elon Musk, is certainly correct in indicating that gasoline vehicles are involved in the overwhelming majority of vehicle fires, including most of those resulting in fatalities, the statistical comparison he has provided in interviews got me curious enough to track down the data for myself.
How Often Do Gasoline-Powered Cars Catch Fire?
The statistic that caught my attention was that Tesla suffers an average of one fire per 6,333 cars, versus a rate of one fire per 1,350 gasoline-powered cars. I’ve been driving for four decades and have probably observed several million cars on the road in that time, yet I’ve only seen a handful that were burned-out following accidents to the extent of the recent Tesla fires. I sensed something wrong, or at least counter-intuitive about the figures cited by Tesla.
Like the Hummer once was, the Tesla is a status symbol (but for a different crowd). Considering its outrageous price tag, one would be hard-pressed to argue that it is a practical car for the masses. But that’s OK with me, because the Tesla is an ambassador for all electric cars through a process called “status by association” (which is what name dropping is all about). We are social primates… like it or not, status seeking is built into our genes.
On the flip side, it could harm the image of electric cars if this latest trend of catching on fire continues, or accelerates. I’ve looked into the statistics and have concluded that, to date, a significantly smaller percentage of Tesla’s catch on fire than conventional cars. Although, that could change with time. Two spectacular fires in almost as many weeks is not a good thing. A lithium fire with exploding batteries is something to behold and makes good copy. It’s also dangerous if the driver should be incapacitated. To date, no Nissan Leaf has caught fire. 35,000 Leafs have been sold in the U.S. compared to 15,000 Tesla Model S sedans. But that might change as well.
All conventional cars have the potential to catch on fire. A few years ago I ran over some bricks in the road that did $2,300 worth of damage to my car’s undercarriage and spilled gasoline all over the road. This Tesla caught fire a few weeks ago a few miles from my office. Just thought I’d share some differing perspectives I found on the subject:
“… a Model S collided with a large metallic object in the middle of the road, causing significant damage to the vehicle. The car’s alert system signaled a problem and instructed the driver to pull over safely, which he did.”
From the Kent Regional Fire Authority crash report:
”Driver stated that he hit an object in the HOV lanes of SB 167. The car started to run poorly and he pulled off the freeway.”
The Electric Highway
The New York Times reporter John Broder recently published his account of an East Coast road trip he took with the Tesla Model S electric vehicle (EV). It marked an important development: Tesla has opened two new public “supercharging” stations some 200 miles apart in Delaware and Connecticut that can fully replenish the Model S battery in an hour and potentially provide consumers the ability to drive the well-traveled Interstate 95 corridor at near-zero carbon emissions. Unfortunately, Broder’s test results came up short, showing the limitations of existing EV technology, the need for more innovation, and the division of opinions on how the United States should decarbonize transportation.
The set-up was simple: Broder was to travel from Washington D.C. to Milford, Connecticut in the souped-up Model S. But according to Broder, he faced a host of inconveniences as the Model S fell short of its projected 300 mile range, resulting in the car losing charge mid-drive and the need to re-route to find additional charging stations. Since then, he and Tesla CEO Elon Musk have traded accusatory statements, (Musk, Broder, Musk, Broder), with even the New York Times Public Editor chiming in with an investigation.
The back and forth ignited a mini-Internet firestorm. The Atlantic Wire, for example, heavily scrutinized Musk’s rebuttal while Chelsea Sexton at Wired defended Tesla by characterizing EVs as being different from gas cars and thus deserving of different expectations. “The day-to-day experience EVs offer is so much better than gas cars for 95% of driving. Long-distance road trips are among the last 5% of usage scenarios,” Sexton writes, before concluding that “it’s ridiculous to expect EVs to deliver the same experience as the incumbent product.”