Just finished watching it
Great movie!
I have a better idea for the ending though. When they show the compressed cube of wreckage that was previously Christine, they should have shown a headlight all smooshed and broken, then shown it slowly fixing itself and turning on. Then they should have had an old song playing on the smooshed radio from inside the cube, with some sort lyrics that went something like "I'll be back again" or "I'm coming back"
I can just imagine it in my mind, it'd be perfect!