Seeing as I have had oodles of fun thrashing this thing around on the Dakar course, I figured I'd release it for public consumption. Warning: extended use of this product at speeds exceeding 2 m/s may result in short flights, extreme enjoyment, antisocial behavior, RUD, and death. In case of accidental cartwheeling, DO NOT PANIC! Extend the landing gear and consult your local rocket technician.
The Greyhound tops out at about 40 m/s and I'm pretty sure that it should be able to complete the Dakar course without refueling, however, there is a clampotron Jr on the roof for whatever you use those for. In general it's very stable over most bumps, but if it does roll it tends to only loose solar panels or perhaps a light.
Download the .craft here