To be honest, I have no idea.
The 2016 schedule for Power Racing Series (the “Maker Faire” sanctioned body, as far as I know) has not yet been posted, as far as I know.
I’m sure everyone can find this on their own, but here is their rules/schedule page.
Section 2.7 covers motors:
2.7 | Motors
All motors must be electrically powered. All power supplies must
range from 12-36 volts RMS maximum input to the motors. Before each
race, track officials will test the voltage to the motor of each
vehicle.
Section 2.5 covers batteries, and no LiPo. Otherwise, largely appears to be <$500, but that is probably oversimplifying. And these are 2015 rules, so who knows on 2016…
I like to peruse the “free” listings.
Wanna see what goes into one of these bad boys?
makezine “build”