51�Թ�

“Almost like we didn’t go from all piston engine and diesel cars to all electric cars,” he said.

McDougall said improvements in the plane’s performance were immediately noticeable, and inside the plane, the racket from the piston engine — which required crew and passengers to use headsets to communicate — was gone.

It had a 420-horsepower piston engine on each wing and one in its nose.

The colourless, odourless gas is produced in high concentrations in piston engine planes, but should be extracted by the exhaust system.

Alabama-based Curtiss Motorcycle Company has unveiled a dramatically styled electric bike that features a battery pack designed to echo the layout of an eight-cylinder piston engine.