Washing your own vehicle in a driveway that just drains all the soapy runoff out to the street/stormwater drainage is bad, right? I see a fair number of people around my area doing exactly this, but I guess they either don't care or they're draining into wastewater somehow? Even if you had a front yard to wash your car on, I'd imagine you'd be ruining your lawn by doing so as well.
I ask because I'd like to wash my own car myself, but don't want to do it carelessly. It would seem that a commercial carwash would be the more environmentally friendly option though.