nascar just drives in circles so its easy to pass at any moment. its boring as helll too... F1 has regulations on passing. if a drivers is behind they are allowed to open the drs wing. if in the lead they are not. in f1 if cars rub tires the car is done. Id like to see a nascar go 140 mph down a straight away then drop to 40mph into a tight turn or shicane and then go 100 mph coming out of it. a nascar would flip trying that maneuver.F1 cars are only allowed to pass if they have a right away sort of speak. F1, Touring racing, united super car, united sports car, rally, dacquer, gp2, indy, le mans, etc... all have similar regulations and only 3 of those are open wheel. nascar is just destruction derby...