According to an article at treehugger, Volvo has a car that can run on five different types of fuels. It appears to have 4 fuel tanks and lots of safety features, too (which is a good thing because some of those would really cause a mess if you hit the car too hard and pierced a tank).

In detail, it will run on:

• Hythane (10% Hydrogen and 90% methane)
• Biomethane
• CNG (natural gas)
• Bioethanol E85 (85% bioethanol and 15% gas)
• and "Petrol"

More details were on AutoMotoPortal.