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Personally, I'm holding out for my Aptera: http://www.aptera.com/
However, I do think the technology is one or two generations awat from producing a more efficient hybrid, with a relatively powerful, variably cylinder car, that looks just like its non-hybrid counterparts. Honda already has a hybrid Accord that performs just as well as the standard Accord. And Chevy (and I beleive a few others) have combustion engines with variable cylinders (only 2 cynlinders fire when idling, the other cylinders fire when performance is needed.)
There's no reason, a modern automobile can't be redesigned to be a little lighter, and maybe even stronger, employing the technologies mentioned above, that performs very well by today's standards, and gets 40 - 50MPG. And only costs 15 - 20% more that a standard vehicle.
Truly, there is no reason we can't have more efficient cars now, it's just that foolish styling and a perceived desire for more HP by the American public that we don't have better cars these days.
Real electric cars. The Tesla Roadster is a beast.
In my highschool we actually had an electric VW Karman Ghia and that was in the late-1980's it was a class project left over from the class of 1965, and it still ran back then.
Imagine modifying a Hummer to get twice the horsepower, decreased emissions and around 60mpg...yeah, you read that right...and it's what Johnathan Goodwin does...check it - http://www.fastcompany.c.../motorhead-messiah.html. I think he's from my hometown. :)
Induction engines have always been very powerful... if you have the juice for them. Battery tech just hasn't matured enough until recently to make it practical.
I heard the Chevy Volt will be hitting the roads of the US in 2010. They managed to get the energy companies involved as well.
"The maximum speed the cars will be able to achieve will be 25mph".
Completely impractical. I'm guessing this is only aimed at people who never leave a single huge city - and it's probably not fit for that purpose.
I only live 10 miles from where I work, but the minimum speed on the interstate is 45mph (and you'll get rear-ended if you drive that). Even taking the feeder road, 25mph is half the speed of moving traffic.