I have a feeling those aren't many of the 135 owners, maybe more of the 128owners that aren't really car enthusiasts. In my area a lot of young girls have 128i convertibles that know NOTHING about their cars loll.
That being said, whenever I would take a girl out, when my car was aesthetically stock, I would get the "awe your car is soo cute" which my response was 0-80 (ThanksJB4) in a blink of an eye to which their response was
and mine was
and all was good!