After watching this video I feel like a sissy. The village of Los Pinos is in the middle of the Colombian jungle. To get to school kids either have to walk around a 1,200-foot gorge or use a 1,300-foot zip line to go over it.
They use a piece of wood as a brake, so they don't slam into the tires on the other side at 40 miles an hour. You'll feel better about your commute after watching this.
Take a look at this crazy video. Make sure you stick around to see what happens at the 3:50 mark.