Wildest F1 race of all time, Belgian GP 1998. Only 6 cars finished, amd Shumi drove 1 lap with only one front wheel.
From wiki:
Michael Schumacher retained his lead and was nearly 40 seconds ahead of Hill when he came up to lap Coulthard. Jean Todt had already paid a visit to the McLaren pitwall to ensure that Coulthard would move over. Coulthard did not let Schumacher by immediately, causing the Ferrari driver to shake his fist at the Scot. As the cars came down the hill towards Pouhon, Coulthard attempted to let Schumacher through, by lifting off to reduce his speed. Crucially however he had not moved off the racing line and in very poor visibility Schumacher slammed straight into the back of the McLaren, tearing off the right-front wheel of the Ferrari and removing the rear wing of the McLaren. Both cars made it back to the pits, and Schumacher immediately made his way to the McLaren garage where he screamed abuse at Coulthard, convinced that Coulthard was at fault. Schumacher even went as far as saying that Coulthard had tried to kill him. He then went to the steward's office to protest. Although the stewards found no case against Coulthard, the Scot admitted in 2003 that he was at least partly at fault for the incident, stating, "I lifted to let him pass me, but I lifted in heavy spray on the racing line. You should never do that. I would never do that now."