the race is a cross-town rally race. some dont' race for two important reasons: (1) they might not have competitive speeds and/or (2) they don't want to crash.
since the race is a cross-town rally race, you have to content w/ traffic (and the police) as well as the terrain. it's also not all flat, since part of the race deliberately forces participants to go up a long slope (about 30 degree?).
there are no "rules", other than common safety and decency. but you cannot race anything greater than 50cc and no scooters. only mopeds. you can do anything else you want. some of us have performance carbs and exhausts, larger front sprockets, etc. but keep in mind that gains in top speed might mean loss in acceleration. there is a debate over whether the race is won by top speed or acceleration. we are dealing w/ lots of stop lights, after all (although some people just go through them).
the address is on the front page of the site, along w/ a link to mapquest.com directions. we'll have maps of the race course and you should familiarize yourself w/ it before the race. it's a three point race. you have to go to point A (Flipside Records) and point B (East Hall) and back to Moped Manor. You can do A and B in any order. so strategy is also important.
as the number of participants has increased over time, so have misshaps. there have been crashes (nothing major), tickets issues, and mopeds breaking down. so it's all pretty exciting. crowds and media are known to show up.