Sign Up for Speed with ROSSA
If you feel the need for speed, you can join the Radio Operated Scale Speed Association (ROSSA). ROSSA is a sanctioning body that sets rules and holds events for speed run cars. If you check out their website (rossa.org.uk), you can find out all you need to know to build your own speed run car, find current records, see where the fastest in the world rank, and more.
For maximum visibility and radio range, drivers send signals from a ladder.