Why do car companies go through any trouble to attempt to disguise a car, and then drive it on the 405, at 1 in the afternoon on a Saturday?

I think a couple minutes with searching through the 2013 models would reveal what car company made this, just with a couple little things that they aren't disguising. The door handle design, the truck lid to bumper profile, the gas filler door location, the rim design, etc etc. So why drive it in public in LA, with Michigan plates if it isn't trying to stand out like a ugly goosling among ducks?