Attached to a car’s exhaust pipe, the device—called a thermoelectric generator—could convert the heat into electricity and put it to use in the vehicle, making the car more fuel-efficient.

side pipes on muscle cars or huge tips on track-ready sports cars. Do you like clever hidden exhaust setups, or ones that are a prominent part of the car's design? There are so many different ...

I mean 1st gen Dodge Viper is the answer. It would be wrong not to mention the first gen Dodge Viper side exhaust. A car icon that actively tried to kill you even when you were getting out of the car.