According the company's Web site, the Tour Coupes run on a 49cc carbureated 2-stroke engine that is air-cooled. The vehicle's creator is quoted in the Los Angeles Times as saying that the engine is "not high-polluting." The vehicle gets up to 60mpg, depending on the passenger load. Tour Coupes may expand to Los Angeles and start selling the vehicles for $6,500 each.
[Source: Los Angeles Times]