Parking Attendant in US

Ok..so I had my first well profiled remark in US of A. Time was Friday evening, when most of the world is enjoying themselves about the fact that they don't have to work for next two days. I went to this hip Japanese place for Sushi (big picture with naked girl and remark, "She Sue" and then a picture of a Fish with remark, "Sue Shi"; I thought it was fun). By and large I am not much in favor of Sashimi (fresh sliced raw fish), but the art and style of making Sushi always gets me.
Since we were in hurry I chose Valet Parking. In Phoenix AZ most of the city is always in short pants. Either the heat gets them or it is a fashion statement in this part of the world. Following do as Romans, I had my work shirt (white) and short pant for an evening outing. Little did I realize it was the dressing disaster (as style connoisseur would have it). The restaurant did allow us to get in and finish our dinner. We came out exchanging good tip and thanks with our Sushi-chef and waited for Valet to get my car. At this time two 'Friday evening' attired girls came out of the restaurant and almost handed over their parking ticket to me and asked me to get their car.
I did not get it first time, I asked, "Do I look like Parking attendant?", one of the girl said, "yeah sure, you are wearing this white shirt and dark pants and standing by the parking booth". I laughed it off, my friend consoled me that we could have really taken her card and probably drove in her car, which could have been better... Eventually I got it, she was not referring to my dress at all, she thought, genuinely, that I was the parking Valet. I was overwhelmed by the acute feeling of racial profiling. It was funny and at the same time very real. I told the 'real' parking attendant about it, we all had a good laugh about it and he was worried whether I pocketed the tip from her.
Driving home I realized what racial discrimination meant. In workplaces and people I meet are too influenced by world economy, it is only outside the ordinary people can give you the real feeling of social undercurrents.
I always get this question, "if you travel to US so much, why don't you stay here forever?", now I think maybe I should, afterall parking attendants make way more money in US than imported software engineers with bad dress code.