When on a track you have to watch out for things like this!
What was he thinking? You never walk out onto a track like that, you always have to assume the cars don’t see you! He was out on the track practicing his drifting when the guy walks out far into the track clapping for him it’s no wonder he hit him. This is also why every track makes you sign a liability waiver just for things like this! Drifting can be dangerous if you don’t pay attention.