Personally I carry my kits in the toolbox of the truck or in the back of the SUV. However, having been pinned in a vehicle, not under the dash but rather one foot in the back seat floorboard (no seatbelt) I have always at least kept a sharp knife to cut my shoes off. I don't know if that would help me but if I had a sharp knife at that time I might have tried to get loose somehow.As it was, they found me about 3 hours later and had to use the portapak to jack up the seat, so I don't know if I could have gotten loose.