I want to discuss how you would do a burnout:
I've got a Wheel in Closeup thats starts to spin and then to emit smoke.
For the part of the wheel that touches the ground I make an cylinder, that is emmitting particles that stays as an circle around the wheel. Instead of making them collide with the wheel (what makes the particles move to fast away) I've made them turn with the wheel (by particle.rotateX = wheel.rotateX / 100;) to maintain the look that the turning of the wheel pulls the smoke with.
Then for the contactpoint of the Wheel with the ground if made another emitter for the smoke that will be blown back while moving foreward.
And the last emitter is emmitting some clouds to fill the burnout a bit up.
Anything that you would do different?