FrequentLurker parent
Except the automobile in this case only reaches the destination correctly sometimes. They are less likely to reach the destination as the path becomes longer or more complex.
Ho, boy, you should read about the 1919 Motor Transport convoy -- the military sent a team across the United States by truck and car. It took them almost two months, and over 10% of the vehicles and many of the men didn't complete the journey.
https://en.wikipedia.org/wiki/1919_Motor_Transport_Corps_con...