Tires lose air,
suspension parts break, debris in the road, fluid from the car spills in front of the tires...
These are also very broad terms, each one of those can be expanded on 100s of ways.
I personally have seen cars break traction at 2 mph, and 150 mph if not more. Friend of mine is recovering from a track accident where around half track his car tagged the wall. Noone is certain if the rear tire let go, or the front Control arm broke, as both were destroyed after the crash, and one video shows an angle you can't make heads or tails of, but either way, nothing he could have done to prevent it.
Not trying to argue or take anything away from the post, just have seen a LOT of accidents related to drag racing (all at the track, go figure) to know that this could have easily happened.
By the way, cold day at the track, I have had traction break in 3rd and even 4th at the track to the point where the car got "squirrely".