41.   Moreover, we had the air-conditioner running, meaning the gasoline engine was working while the car was stopped.

42.   Nissan last year introduced a special version of its Sentra sedan in California that dramatically lowers emissions of a traditional gasoline engine.

43.   Now smooth, quiet electric motors and batteries have replaced gasoline engines and hoses.

44.   On hills, the electric motor draws from both the battery pack and the generator while the gasoline engine fuels the battery pack and provides power to the wheels.

45.   On the highway, the gasoline engine does the work though the electric motor will provide boost for passing.

46.   Other times, the electric motor boosts the power of the gasoline engine.

47.   Pearce also displayed a large pickup truck and a city bus that were each powered by a hybrid system of a gasoline engine and an electric motor.

48.   Primary drive power comes from the gasoline engine, with the electric motor used to boost performance as necessary.

49.   Several manufacturers are pushing direct-injection gasoline engines, which promise to save fuel without sacrificing power.

50.   Snoozing there, I hear birds, kids at play and the distant drone of small gasoline engines at work on lawns.