I did the race around the prison today, and one of the other players - some guy near to level 400 - showed up in a custom Zentorno. His idea of "racing" was to pitch everyone into a spin. He didn't need to, since he could comfortably blitz the field. But he was too clever for his own good, and wiped out on the final lap when he ran wide and hit a telegraph pole while I slipped past and won.
Anyway, he stayed on for the next job, but decided that rather than do the job, he would deliberately fail the mission by killing everyone. After he did it several times, it became obvious that he was trolling, and everyone quit. His response to this was to set massive bounties on everyone involved, and then re-set them as soon as we were killed. He also got into the habit of destroying personal vehicles. Finally, he gave me a poor rating on my gamercard. And all because he lost a race because he's a poor driver.