so i used 10x time acceleration and the frame rate dropped and i realized that the tire tracks were odd. they seemed to be too straight. i'm unsure if you could fix this. it seems that the computer is taking the location of the rover in the previous frame and the location of the rover in the current frame, seeing the difference and drawing the line, only one problem, the didstance from frame to frame is big.
this is not serius or anything, just something that could use some fixing.
thanks