You roll up to a stop sign and your chest tightens with dread. Whenever you accelerate, your engine sputters, backfires, and in general sounds horrible. Plus your car smells awful. All of these ...

You're driving a loaded diesel rig down a mountain pass, foot hovering over the brake pedal, heart racing. How do you slow 20,000 pounds safely without cooking your brakes? Cue the exhaust brake -– ...