Did you see the smoke coming out from around the trans. when the car flipped over. Looked like trans. fluid came out and the tires spun. It could happen very fast but in racing you have to be ready for anything. You shouldn't be comfortable in a car because it'll bite you. Anything can happen from braking axles,ladder bar or 4-link joints,tie rods or what ever.
Starting with a slower car,experiance and lots of seat time is a must in reaching higher speeds.