Yes, it really doesn't do much good to have efficient vehicles to mitigate energy descent if they aren't afforded a practical avenue for conveyance.

Three wheelers are coming ...

"President Obama has signed legislation making high-efficiency two- and three-wheeled vehicles eligible for the same loans the department has granted to Tesla Motors, Fisker Automotive and others to spur the development of high-efficiency automobiles. There is no guarantee Aptera will get any money, as the law only allows the company to apply for loans it previously was barred from receiving.

http://www.wired.com/autopia/2009/10/aptera-doe/

I like this one ....

http://www.eliomotors.com/images/ELIO_middle.png

You'll see the Aptera above, and the Persu is also one of a growing number.