This concept is really cool! I really like the sleek lines and design of this one. Plus you can save gas while driving this cool car.

This concept from Peugeot is definitely cool! You can go hypermiling with this one!

Cool idea! This looks so much fun too. Plus it is a hydrogen gas saver, so its just totally awesome!

A solar powered tricycle definitely is a nice idea. More gas mileage plus you are able to help save the environment.

Now that one is nice. It would be better though if he would incorporate some design in his trike. But it still is a super gas saver, and for that two thumbs up for you!