The only way to travel

I've often thought it would be nice to have a two-headed demon to get around on. After all, the sign on the freeway entrance only says "no horses, mopeds, or pedestrians." It doesn't say anything at all about demons.

There are lots of other advantages too: no need to buy gas, and merging into traffic is never a problem!
 

Added: 3/20/08
 
The only way to travel