You are a lucky man. You may have a had friend or family with you or hit another car. We are always fortunate when things are found in advance.
It is also a good reminder to either jack them up and look them over or have them put on a lift now and then by someone that knows how to look for these things. It's why I do my own oil changes, so I can look them over every 5K miles, kick the tires and check fluids and air pressure, etc.