Why not build a frame for the windshield, which you can attach with bolts, instead of drilling into the Lexan itself? It seems that Plexiglas with screws tends to develop stress fractures.
Also, what kind of ignition did you put in that? Do you use EoC in your current cars? If you do, if you designed it with a kill switch, you could have something better and more attractive than anything else on here!
