I think maybe yesterday I was coming across as being too strict and trying limit backgrounds too much.

Stuff like this http://www.imcdb.org/vehicle.php?id=81474 is fine because it seems to be set up part of the scenery. I just don't like see all all these passing traffic cars in cities and stuff just sitting parked (unless it fills the frame).
Take these two for example:

http://www.imcdb.org/vehicle_43124-Buick-Century-Riviera-1957.html

http://www.imcdb.org/vehicle_79248-Freight-Rover-Sherpa-300-Series-1984.html