I don't see how is that "very lucky to be alive". If he managed to avoid crashing into a canyon or an abyss, then maybe. Exaggerating.
Lets see losing control of the car in wet conditions. Depends on the speed the car was travelling it's not something to be trivialised. He was lucky nothing serious happened, which is what truly counts. Not like he was bumped at the lights with a slow speed from someone not braking in time.