Via Barking Up The Wrong Tree: What kind of car is most likely to get broken into by a hungry bear?
From 2001 to 2007 bears broke into 908 vehicles at the following rates: minivan (26.0%), sport–utility vehicle (22.5%), small car (17.1%), sedan (13.7%), truck (11.9%), van (4.2%), sports car (1.7%), coupe (1.7%), and station wagon (1.4%).
Full study is in the Journal Of Mammalogy: Selective Foraging for Anthropogenic Resources by Black Bears: Minivans in Yosemite National Park
I saw something like this on television before. It was video of black bears prying open minivan windows in a matter of minutes and eating the seat cushions and trashing it. Perhaps an advantage of a station wagon is that it is too small for the bears to move around once inside.
