That is a pretty big piece of glass. I have replaced the rubber in the bug, but it is pretty old, sort of like the car to which you refer. I have no doubt it is a dealer only part, it will be at least a two or three person job. You can use a thin piece of nylon rope to assist in working with weatherstripping. For the windshield on the bug, I put the rubber on the glass, stuck the nylon rope in the groove that fits into the window frame, pulled out the rope(from the inside) as a buddy GENTLY pushed on the windshield from the outside. I would imagine it is a similar process for any window glass. Do it on a warm day to soften the rubber a bit