I usually lose when for some reason my sparrow does not land properly after a teleport. It tends to bounce, I lose all my speed or sometimes just topple over...This has cost me many 1st place finishes. Plus it seemed that way more people were constantly playing bumpercars yesterday. So annoying. Luckily I've completed S- license on all my Guardians and cleared all the racebook challenges days ago. I don't even have the racebook. :P