It didn't break.
Mind you, it didn't go particularly quick either, but given the wind was blowing directly down the track (the wrong way!) that's not too surprising.
Lots of breakages among the other cars though, so between that and the longest queues I've seen yet, I only did 2 runs. a 15.1 and a 15.0. Only 0.3 off my best, so not too bad considering.
Best part was watching a
5.3 at 260mph run!