Tesla Motors To Suspend Roadster Production
Wyatt Earp writes with news that a recent SEC filing from Tesla Motors revealed the company plans to stop production on its electric Roadster (and the Roadster Sport as well) in 2011. This will leave the automaker without any cars to sell until the launch of its Model S sedan (financed in part by $465 million in DoE loans) in 2012. Tesla plans to resume production of Roadster models "at least a year" after the Model S arrives. From Wired's Autopia blog:
"'As a result, we anticipate that we may generate limited, if any, revenue from selling electric vehicles after 2011 until the launch of the planned model S,' the company says in the SEC filing. That may not be a problem if S production starts on plan and goes off without a hitch, but if Tesla hits any snags, things could get ugly fast — a point it concedes in the filing. 'The launch of the Model S could be delayed for a number of reasons and any such delays may be significant and would extend the period in which we would generate limited, if any, revenues from sales of our electric vehicles.'"
There isn't anything for them to prove. They aren't an alternative.
It's either price or range. Can't have both. I'm not spending $50k+ on a vehicle and I'm not driving one with less than a 300mi range.
The Tesla model S sedan will retail for $50,000+ which means that less than 20% (and that is being very generous) of Americans will be able to afford this car. Tesla is a niche and it will always be niche. The best that they (and the taxpayers) could hope for is for them to be bought by one of the major auto manufacturers. Why should the taxpayers be financing car production by boutique manufacturers for wealthy people? If the government subsidizes heavily so that average people can buy this particular car then you have to explain why the government should be in the business of picking winners and losers in the market for private automobiles. If Tesla is such a good investment then why cant they raise $450 million from the private equity market instead of from taxpayers; 99% of whom will never sit behind the wheel of a Tesla?
Energy density of lithium batteries: 1 megajoule/kg
Energy density of gasoline: 45 megajoules/kg
That's a slightly misleading statistic, because it doesn't include the mass of the engine or drive train in the calculation. Electric cars are much simpler mechanically. You need to compare the mass of fuel, a fuel tank, engine, gearing, and drive train to the mass of batteries plus electric motors and then see how much power you've got for both. The electric car comes out a lot closer when you do this.
Then you need to factor in the fact that you can charge an electric car at home. How many trips does a tank of petrol give you? A week's worth of typical driving? Then if your electric car has only half of the range but can be charged overnight then it's competitive.
Finally you need to compare the cost of the energy and the efficiency of generation. Energy conversion from chemical potential energy a battery to kinetic energy via an electric motor is a lot more efficient than converting hydrocarbon fuel into kinetic energy via an internal combustion engine. Electricity can come from burning hydrocarbons, but it can also come from things like solar, nuclear, wind, hydroelectric and tidal power. Technology keeps making these forms of power cheaper, but scarcity keeps making hydrocarbons more expensive. When 1MJ of petrol costs twice as much as 1MJ of electricity, it makes a difference. Petrol sold in the USA is about 36.6 kWh/US gal, so at $3/gallon that's 0.08 cents per kWh. That's pretty close to the cost of electricity. Once you factor in the relative conversion efficiencies, you pay a bit less per unit of kinetic energy from an electric motor than you do from an internal combustion engine at $3 per US gallon of petrol. When petrol hits $5 per US gallon (which is cheaper than it is in the UK) then it's a lot more expensive than electricity.
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