The StreetPlane gets about 100 miles to a gallon of gas. Not that its tank holds a gallon. It holds less than a quart.
He can pedal if he wants, but he uses the engine most of the time. He pulls the starter cord before he sets off. The throttle is mounted on the handlebars.
So far, Jones says, he has received no heckling from motorists.
"People give me more room than they give a bicycle - and a lot more respect," he says.
Jones has three trailers that he can pull with the StreetPlane, but he admits the advertising business has never taken off.
Mostly, he uses the trailers to publicize his own Web sites and to advocate for an increase in the city's minimum wage. That has caused him more problems than anything else.
"Some store owners will try to stop me from parking on their property, even if I stop in to get a drink or 19 cents' worth of gas. Of course, if the manager's out, then there's not a problem," he says.
The brothers are working on three more StreetPlanes.
One model has an electric motor and two wheels.
One is a canard with a small wing in front and a larger wing and engine in the rear.
The design of the third one is undecided.
"We're kind of up in the air between a helicopter and a blimp," Jones says.
