Anyone knows if there is a clear film for the windscreen?
Yes there is and it's available through Madico USA based in Boston M.A www.madico.com It's called "Clearshield" and it's my line of business here in Oz. Rob.
I'd find it hard to believe any company would assume liability for placing something that could potentially skew your vision on the windshield. Just assume the windscreen is a wear and tear item if you ever follow another vehicle. Paint jobs are one thing, a chipped windshield is a relatively painless replacement, and most insurance policies cover them.
I use the clear film on my windshield, and it works brilliantly. No issues up to 192 MPH (my top speed). Highly recommended! Tim