I want a HUD that can detect and lock onto cop cars but I feel that's probably 20 years off... or someone could write a droid app today.
For those saying windshield replacements would cost a lot, I don't know what insurance provider you have but mine replaces OEM windshields for free, no matter the cost, with no deductible. Last time a big rock cracked my windshield I got excited because I knew I was getting a brand new one