When my dad was getting his private, they were doing touch and goes a some backwater airport. Hardly the same thing as we're talking about, but as soon as they landed, some genius pulled onto the runway with a quad and tried to race them and ended up getting clocked by the wing. The incident made my dads instructer give up instructing he felt so bad. Luckily the kid was wearing a helmet and only ended up with a concussion.

On topic, here's a shot of the 74 a second or so later.
http://www.airliners.net/open.file/1078774/L/