The serpentine belt found in most modern engines gets its name from its snake-like shape. Firefighters in Scottsdale, Arizona, had the unexpected opportunity to compare this crucial piece of rubber with the limbless reptile it’s named after when they received a call from a man who found a boa constrictor-a huge, non-venomous snake-hitching a ride in the underbody of his Chevrolet Silverado 2500 HD.