as Merly has said i wouldn't wait either ,the windscreen problem is an issue but a very small issue that i for one have not suffered from
To be honest I've (on purpose) hit some big road holes, run over some manhole covers, played stupid loud music, put cold and hot water on my windscreen, twisted the chassis over curbs and nothing.
Short of hitting it with stones/hammer/traffic warden there's not much more I could do to it.
Why did I post this... mine will now crack on the way home when I hit a leaf.
BUY IT! I ORDER YOU!