What was the first self-powered vehicle?

What was the first self-powered road vehicles? Self powered can mean many things. A horse and chariot is a "self powered vehicle" for example. Over 2,000 years ago. If self powered means it "generates it's own power", a sailboat qualifies. Probably over 1,000 years ago. Later vehicles that generate their own power include: First electric self powered car, about 1970 when photovoltaic panels were introduced. First electric self powered boats, about 1980. First electric self powered airplane, 2007. For a growing list of self powered electric vehicles, see http://www.selfpoweredelectricvehicles.com/