Some of the top fuel teams in NHRA have gone to covers over the cockpits. Soon after Antron Brown was in a crash that his car rolled over and caught on fire. The safety crew was able to get him out quickly. He got minor burns from the fire. But if he didn't have the enclosed cockpit installed he would have been in much worse shape.
www.youtube.com/watch?v=xMwp1aLcJuY