Tesla Motors, creator of an all-electric sports car, has already taken $US100,000 deposits for its first 100 cars, according to CEO Martin Eberhard, reported news.com.

The deposits guarantee that buyers will get the cars, due out next year.

"All 100 are gone," Eberhard said, according to the report.

The company launched the car in Santa Monica, California, on 19 July by which time 37 people had already placed deposits. Many early buyers, such as Google founders Larry Page and Sergey Brin and Ebay co-founder Jeff Skoll, are investors in Tesla and, so far, only a few cars have been fully completed, news.com said.

The report added that the electric roadster goes from zero to 60mph in about four seconds, about as fast as a Ferrari, accompanied by an "eerie hum".