Many years ago I had to go to a training program lasting a month in California. i packed up my bicycle and had it shipped out with me. While riding on a semi-rural road a car overtook me and the next thing I knew a full beer can hit me sqarely in my left kidney. I kept on riding but squinting from the shock and pain prevented me from seeing the license plate of the speeding car. Luckily I had no lasting effects other than to avoid riding there again.