Surprisingly enough, I don't recall anyone ever being trapped by a seat belt where exiting the vehicle was real important. I do know of several times, one another officer, where the car went into the water and guess what, those neato power windows don't work anymore. The officer was down to a little air pocket which was getting smaller by the second when he shot out a side window. Hard on the ears. Anyone with power windows should have a spring loaded center punch velcro'd under the dash or some other handy location...