High walls are bad for sprint cars, just ask shane hmiel. THAT was safer with guard rails. Most of the time these days they don't get hurt if they just flip without hitting anything. Leaving the track is fine as long as there isn't anything solid to hit on the other side. Check out the Mellenberndt flip from PA.on you tube. He returned to run his back up car that night. The only issue I see is the I beams sticking up above the guard rails. They should be cut off flush with the top. Racing has always been dangerous. Drivers don't care. They are waiting in line and begging to run those cars.