12,500 miles by solar power

[Joe Blake]

http://www.gizmag.com/solar-car-world-distance-record/11332/

Probably not too comfortable but hey ...

http://www.gizmag.com/pictures/xof1-world-distance-record-solar-car-13.jpg

... it would be cheap to run.

Joe

[Ralph Day]

Those low resistance tires probably wouldn't make for a comfy ride:eek:

Ralph