The whole point of alternative fuels is to reduce the North American dependency on the Middle East. Replacing gasoline for Uranium would just shift those same problems to the former USSR Republics.
I still believe using salt water as an energy source is the only way to reduce dependency on non renewable resources and fix climate change all at the same time.
http://www.youtube.com/watch?v=6KVM1UAPCzc
Also, even if alternative fuels arent as efficient as regular gasoline, I would rather subsidize farmers in North America rather than Sheiks who want to kill us in the Middle East.
MYK