[Bill Bess]

Solar powered vehicles most likely would be the only real way to not use any energy from the earths's stock pile of fuels.
Gas (any gas) and electrical (batteries) are our best bet for now but who really knows.
If you could get a freely ( no earth resources) produced power source things might be great, but it would still cost us and arm and a leg to buy the source.

Big government (Obama) would like to see us all walkin or riding a bikes...kinda like other 3rd world countries and living in poverity.
But I do think 35 - 45 MPH is not really an unreaasonable goal for the commom motorized rickshaw.
Look for the 427, all electric Cobra-Rickitty-Shaw -Shelby RS.

Bill - kidding around somemore!