In the early 1980s, I hitchhiked from London to Cape Town at the tip of South Africa. The overland trip took more than six months, and I traveled about 11,000 miles — almost half the circumference of the Earth. I dropped down through Europe, crossed into Morocco via the Strait of Gibraltar, and then traveled across North Africa. From Egypt, I followed the Nile all the way to its source in East Africa before making my way down to South Africa, which was still under apartheid at the time. I was no newbie to hitchhiking. Since high school, I had hitched rides across the United States numerous times, traveling from coast to coast on many of the nation’s major interstate freeways. Hitching was also the main way I moved between my home in the Midwest and my university on the East Coast. I loved hitchhiking because it offered a fantastic way to get to know an amazing cross section of people from many different classes and races and walks of life.…