If you've ever flown a tailwheel, you're familiar with the bad forward visibility in the 3 point attitude (on the ground). For high performance aircraft, it's generally even worse. In the Reno Air Races, the aircraft start on the runway in a grid formation, like a car race. They all accelerate down the runway at the same time, mostly blind, assuming the aircraft ahead of them is accelerating. This year, an aircraft had to abort before the start, and due to some mix-up, the aircraft behind him didn't know. Cockpit video from the front aircraft. Just amazing that no one was seriously injured.