In the past few years, we have seen plenty of interesting solar vehicle projects. CalSol, the UC Berkeley solar vehicle team, has been working on solar vehicles for a long time. They have tested vehicles capable of reaching 80mph. Zephyr is a solar car with a lightweight body that handles like a Go-Kart.
Zephyr is really an electric car with a solar panel on it. On a fully charged battery with no sun, the vehicle can drive for about 2 hours.