Oil spill sends 13 riders into dangerous pileup

This is pretty scary stuff for the riders involved - all 13 of them.

During the Moto3 France Grand Prix, oil spilled on the track, leading to a massive pileup as rider after rider slips and crashes, with the bikes themselves coming at the fallen leaders try to avoid them:

Here's another look in GIF form:

Chaos at French Grand Prix due to oil on track

The Sun reports all but one rider returned for a restart after a few went for a visit with doctors after the incident.