TIL: do not stand next to Vaal when he dies in an Immolation race
Also, if you make a witch in a no-projectiles race, plan to kill Hillock unarmed. Herp derp. Ditto ranger. Witch is popular though, because a lot of skills (firestorm) bypass the projectile thing. Without going too much into detail on our race strategy, I will say that party racing is a lot more fun than solo, and far more efficient as well.