JZ got two flat tires on his truck. I drove over in the Cadillac and helped him buy new ones. So he bought retreads. Then again, I wouldn't sink much money into that truck either. Come to think of it, I'm about done sinking money into this Cadillac. It is finally showing its age as well.
Here is the "Martian Street Map". It is really the polar regions where frozen liquid, probably water, is pushing up the terrain into these natural shapes. But that is not to say they could not be man-made, I mean, have you ever seen a road map of London or Tokyo?
