U could try, once setup.
Putting a huge air extraction unit in, plus put suction vents in the floor, in the middle of the track, but not in the places we drive, so that then, after a while, once it is set up, Us nitro boys can have a run and no one will die from having all crap floating in the air.
but u need extraction in the roof and in the floor to get rid of the exhausts.

and it would also help get rid of the O^3 gas produced by electric motors (also known as O-Zone, a very serious and toxic gas)