Automobiles are poised to hit 300 mph on public roads. My response to this is ho hum. It’s time to try a new form of racing underground racing. The rules are quite simple. Two automobiles start in a cave at a solid wall and they race through that wall for 1/8th mile to a cavern at the other end. Use whatever you want to get through the wall. Lasers, ultrasonics, drill bits, 4th dimension whatever.