After a crash happened in front of Dale Earnhardt during the 86 Richmond race, Dale climbed onto the side of the car steering with only his knee
His car was covered in mud - and he hollers on the radio, "Richard, I need to pit."
And Richard says, "Dale, I'd hate to come in and pit, lose all that track position."
And Dale comes on the radio and says, "I'm gonna be off the radio for a few minutes."
And then you see Dale driving with his knee and got one head and he's cleaning the windshield off.
you can see the video clip at https://www.facebook.com/NASCAR/videos/10153816564703801 start at 10 seconds
you can see the windshield moment from the drivers side of the car, from some camera on the opposite side of the track in the video below (Thanks PDV!)
and though they don't show him sitting on the window sill, they mention it at 22:22