You never know when or where you might find a new client. Sure, most of you don't like to get solicitations on your cars, but then again, most of you are all avid car enthusiasts. Therefore, you take great pride in the way your vehicle looks, it's your pride and joy...."you're personal space", as someone pointed out. Yet, for every enthusiast out there, there are probably 10 people that absolutely hate to work on their cars. Just because people drive around in expensive cars, doesn't mean they like to or even want to put in the time and effort that many of you put into your own vehicles. Point being, these very busy people just might welcome the card of an auto detailer. It's just one more thing they don't have to hassle with. I've gained more than a few clients by placing a card above the door handle. In fact, one of my best clients, came to me after finding my card on his drivers door while parked for the Memorial Golf Tourney. I live near Dublin, OH and my ideal target market attends the golf event every year. I don't believe it sends a negative reputation of your company, but I'm also very selective when choosing which cars to hit. It's no different than any other form of marketing in that some will call you and some will not.
Just my two cents.