We were leaving Peru and crossing the border into Bolivia to arrive at the beach town of Copacabana. During our border crossing drive, we arrived at the Straits of Tiquina. The bus dropped us all off at the waters edge and we quickly discovered what was about to happen based on other floating buses and cars in the distance. The buses drove onto these fragile bare-bone barges, thankfully without us, and they were towed across the lake using very small outboard motors. It was a constant operation that seemed to work rather efficiently, as long as buses weren’t sinking.