Always. People will talk about accidents where the car gets pulverized and you've got nothing to lose by getting thrown from the vehicle (where your odds are slim, but still preferable to none), but these people are betting their lives on an inside straight draw. You're much more likely to have an accident where the car flips over several times than you are to have one where it fits in the trunk of a Miata afterward. You can only plan for one or the other, and I plan for the most likely accident by putting my damn seatbelt on.
--T.J.
