Original owner of the roadster and bought the SRT6 in 2008, currently at 61k and 42k respectively. No problems with key. (Nor did I have any with 2007 that I sold two summers ago). My roadster window is solid but 1) I live in cooler MI, 2) the top is down all summer, and 3) the car is always garaged and usually covered as well. The rear window glue tends to give way when exposed to high, often humid heat in the south, SE, and (just heat) SW.