Basically I was in the lead of a race at the Nurburgring GP circuit by a healthy margin, and decided for some reason to cut across the grass leading to the NGK-Chicane.
Kept the accelerator down, launched off the verge, hit the white block barriers and ended up ricocheting off those into the air. The higher you go depends on where the car is prior to hitting the verge, and the angle that you hit the barriers.
Think my PB airtime was about 10 seconds before crashing down to Earth, then bouncing and barrel rolling forever toward the barriers on the outside of the Coca-Cola Curve.