That's terrible and could have been avoided. The announcers were saying that all ovals have that type of wall! Wrong!
Maybe in Mexico but not in the US. All walls must be contiguous except where you come in or exit the pits, and they are usually on the curve which propells most vehicle to the outside. This opening was on the traight away and should not have been there! It's like putting a retaining wall next to the straight. That is just simly stupid!
Watch what NASCAR says about it. It's really obvious.
wow, that was quite a blow. Hopefully this will lead to safer cars and tracks down there, like it has up here.