Apart from random compliments during gas stops and after parking, the M3 always seems to unleash the street ricer in a lot of drivers when I slowly drive past them. I'm guessing it's either because of the badge in the back or they see my boost gauge, they either end up flooring it past me or try to egg me on into a race
When I had my Type-R however the best reaction I got was after doing a group drive to squamish one night with friends we were hanging out at Tim Horton's and a cute girl randomly walks up to us and asks who's ITR that was. Turns out she had one before but it got stolen (she's from Seattle). She chatted with us for a little bit before leaving in her WRX (

) with her bf (

)