How does this golf cart work?

QUESTION: I went golfing and the golf carts they let us drive are very interesting. I think they are gas powered but the engine does not stay running. Somehow when you hit the gas pedal the engine goes and when you let off the engine stops. How does this work? I dont understand how it can go on and off like this. The crazy thing about it is it goes instantly when you hit the gas there is no delay to wait for it to start. Anybody know? Thanks. ANSWER:

Answer by toughnottobeacynic
None of the engines on gas carts run continuously. They all start when you depress the gas pedal and stop when you take your foot off the gas pedal. It's more fuel efficient and all engine noise is eliminated when you're trying to hit a golf shot.