I was at the mall a couple of weeks ago and I was behind two women. Has they approached their large SUV the passenger started complaining about how the little Toyota compact truck was parked too close for her to get in.
I stopped and looked at the Toyota which was parked perfectly between the lines.
Then I looked at their SUV, which was parked diagonally across the parking space, with the rear passanger tire over the line, and there was a "COMPACT" sign right in front of it.
On another trip to the same mall I was behind two people complaining that there is no parking. All of the surrounding parking and the four story garage where filled. People were driving around waiting for others to leave to get a spot. I think that the decreasing physical space will force people to drive smaller vehicles. At least in the city.