I've been racing for several years - it's lots of fun. If you think the adrenaline you get at the beginning of a DB race was intense, get ready for a surprise
What it basically is a this: bring your car (any car as stock or modified as you want, as long as it's not a tall SUV or truck). You run your car though a course laid out with pylons as quick as you can. It's a run against the clock, there's nothing to hit, and is sanctioned by FIA Canada. It's about the most fun you can have in a car with your clothes on
It looks something like this: