Talk about a close freaking call!
The Nürburgring is a very dangerous and very technical racetrack where you have to always be aware of your surroundings. So, when track marshals are waving yellow flags, it means that you really need to slow down because there are unsafe conditions ahead.
An oil spill at the Nürburgring was causing quite a few cars to slide off the track and hit barriers, so marshals were forced to put out the yellow flag. The only problem was that many of the drivers weren’t aware of the yellow caution flags being out, and were still losing traction and crashing.
So, one guy decided to run out to the corner of the track past the wall and wave his arms to warn oncoming drivers of the oil spill. One E36 BMW driver didn’t see him and didn’t slow down, causing the car to lose traction and slide right into the wall where the guy was standing (at the 1:35-mark). Luckily, the man had enough awareness to jump over the barrier wall and narrowly avoid getting into a fatal accident.
Source: AA Nordschleife Media YouTube