4 wide is a joke. I envision it when it was originally thought up as a way to speed up the program when there were 32 car fields and run on a 2 wide strip. Now it's just a gimmick - the pro ranks today are lucky if they can fill a 16 car field. And there's usually enough action watching 2 cars go down the track. Maybe attention deficit disorder has grown over the years. But I see no reason to speed up the current show, nor do I think a track will ever recoup their investment of adding 2 additional lanes. And if one set of lanes gets oiled down, do they send cars down the other while clean up goes on? Not if they are concerned about the clean up crew's safety.