Why do you feel the need to "race" other cars?? I believe the goal of tuning a car in to make it the best driving machine you can for the money you got. Then the challenge is to see if you can hook up a nice drive and know that you got every corner, braking point etc right.
Racing other cars is dangerous, especially against those you don't know. Who'll give in if you're only a bonnet's length ahead and there's people coming the other way???
With friends, it's somewhat different, as you know he'll let you in if you miscalculate. But someone who's got a point to prove?? Don't be so sure.
You know how many points you get for motor racing on the highway? Up to 11. Won't be driving a turbo motor for a while if you get one of those...
I guess some of ya will say I sound like an old man here, but I'm far from it! I bet there are some people who wouldn't like to see you in A&E cos of a stupid race.
Cheers
Andy