I often wonder about this as I have very different experiences depending on the car I'm in. If I'm in our Smart people tend to be a lot more aggressive, don't want to let me in at junctions, etc., while if I'm in the 911 people generally either tend to give me space, or men in fast cars like to follow me, but rarely overtake even if I'm driving slowly. The best experience of all is in the classic 911 as majority of people smile, wave, let me in at junctions, etc. It's fantastic! Back when I had an Audi RS4 young blokes always wanted to race me...
Oh, women and children always tend to respond to the classics. Children a lot more to the 911 while women used to absolutely love my old Lotus Elan.