I watch the show. As mentioned in some of the above post, it's scripted, roads blocked off with the blessing of the city where it's filmed. Some BS drama and some screw ups like when Daddy Dave hits a 11" curb in the right hand lane, loses the race. Then comes driving back, checks the left hand front. Tires still up and the rim still round. Must run some tough tires. Next show say's the strut and rack needed to be replaced along with some minor body work. Just a TV show where the starting line guy is going to get run over and the next scene will show someone else for the next race.