I was down in Virginia Beach this week for MODSIM to exhibit for work and it was a decent show.  Everything was going well and I was “driving safely” home when a truck decided that he needed to swerve in front of me to exit from left lane and kicked up a nice rock into the windshield.  As I was driving a university vehicle, I gave them a call and alerted them, but it was a nervewracking drive as the crack was of decent size and was growing slowly as I drove.  I tried to think if there was anything to do to stop or slow it, but wasn’t sure what was best. Open window to equalize pressure on both sides? Who knows.  Anyways, I drove even more “safely” as I watched it grow millimeter my millimeter over the journey home.  I was afraid it would get to point and be undrivable, requiring a tow truck and all that, but luckily it crept slowly enough to make it back and turn it back in.