Hello Gedanken,
I do that kind of thing all the time, but with the proviso that you want to watch out for being doored, and also you want to go easy and slow, attempting NOT to pi*s the gentle drivers off.
Although I'll admit to taking some free right turns on red, you don't really want to go through red lights...it can make the car drivers mad at you, it provides grist to the "Get those toys off the road!" mill and you set a bad example.
You also want to excerise caution when drafting off of cars/vehicles.
Good luck, and remember, always act as if they are trying to kill you. You'll be gratified at the nice drivers, and prepared for the bad ones.
cheers,
tt