At rush hour it is virtually impossible to get a cab ride in Bogota or Lima. The last time I went to Bogotá, the line for taxis at the airport was even longer than the queue for immigration. I was tired, it was 10:30 pm and it drizzled. I would have given my kingdom for an Uber, which does charge more if demand is higher. Finally, and after an hour long wait, I got into a dirty … [Read more...] about An informal Uber?