Well... As we all know, none of the modern cars since the 80s on so have gotten lighter or more fuel efficient, in general. You've got the hybrids doing double ecological damage with up front lithium battery mining and production, then crippled with a ten year life. Just more unnecessary, dangerous junk like wifi and such.
In Japan, Panasonic sponsors AA rechargeable battery race cars and races. Seriously lightweight and goes for dozens of miles. No reason to exceed 1000lbs with a carbon fiber shell like F1 race cars.
Then again, I do need the new truck's 12,000lbs towing ....er, let me think....er..... Right.....not!
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