Quote Originally Posted by fusionfrenzy View Post
Recently I was in a race (offline) and I was in first, and as I came around for lap 2, I saw a bomb in the distance, which then exploded itself before I could get to it. Definitely wasnt set off by a ship, so maybe when the race leader comes toward them, they disappear (spectacularly!).

It coul'dve just been a bug though if no one else has experienced this.
they are only timed I've run into a fe left by players lagging behind but they seem to stay around for about... 20-25 seconds like someone undoubtably said.