Had a glass incident on the road I live on a month or so back. The road is popular with cyclists but I don't know if it was aimed at them or if it was just general vandalism. There's a hill for about half a mile then it flattens out for a quarter mile before you hit a 90 degree turn on this small rural road. The fast guys with the carbon wheels are still going at a decent speed when they hit the corner. And right around the corner the road was completely filled with glass.

My wife drove over it in her car and didn't want to repeat that when she came home so she called me to clean it up. At first I thought it might be something that accidentally dropped but on further inspection there was too much glass and it completely covered the road from side to side for 15 or 20 yards. The volume of glass would have required multiple bottles and an accident would have had a more random distribution. Probably took me 20 or 30 minutes to get it swept up. You get most of it up but when you look back at a certain angle in the evening light you can see the glitter of pieces you missed.