Now I realize that Q could be correct. If so, I am sure he will be happy to give us several URLs that support his indirect assertion. Q, you have the floor.
Searching through sites on the Dymaxion Car, I found
one of the ones I looked at before that probably led me to this impression.
It seemed reasonable to me that if the car's engine is in the back, and there's only one wheel in the back, weight distribution would be a problem - at least for tire wear. I will admit that this weight distribution would seem, if anything,
beneficial for steering.
In any event, it has had time to dawn on me how Reggie could, not being local to Mars, make an error which no AI will save him from. It would be only embarrassing, not life threatening, unless he also runs out of gas.
Failure to note that the
Valles Marineris lies between one and one's destination.
Pressurized highways between domed cities, or other, less famous, Martian topographical features, which are also natural barriers to ground transport, are also possible.