The Uno is an electric-powered vehicle that bears a resemblance to a motorized unicycle.

The Helios and a series of similar, earlier aircraft were built by Aerovironment Inc. of Monrovia, Calif., a company that specializes in electric-powered vehicles.

While current technology makes gas- and electric-powered vehicles rather impractical, utilities are experimenting.

The recreational vehicles on order will be diesel-powered, he said, "but we will work with Winston Battery to develop electric-powered vehicles in the next few years."

As for the Impact, a strangely named electric-powered vehicle that is supposed to clean up America's air, don't hold your breath.

Geely has been in talks over the possibility of converting London's black cabs into electric-powered vehicles.

Chrysler has not announced any production plans for an electric-powered vehicle.

But there was no one in the street in these dead hours just before dawn, nothing but a silent row of electric-powered vehicles.

The use of electric-powered vehicles on city streets is not new.

That has long been a stumbling block for electric-powered vehicles, because they lack an internal combustion engine throwing off heat and because air-conditioning drains a battery rapidly.