13 Apr '12, 7pm

Rethinking Electric Cars -- Part 6: Electric cars need to lighten up to carry bigger battery packs for longer ra...

The most obvious choice is to build with aluminum. Some cars are already aluminum intensive in their design. Tesla’s upcoming Model S sedan has significant amounts of aluminum in its structure, but it’s not all aluminum. Others, even my own car, have some aluminum panels to save weight and improve fuel economy. Aluminum is very similar to steel in many ways, but while it can be spot welded, it’s a far more difficult and energy intensive process than spot welding steel. (As above, spot welding is a BIG DEAL in building cars. It largely makes modern, unit-body cars possible.)

Full article: http://www.green-energy-news.com/arch/nrgs2012/20120039.html

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