Sleeper cars are some of the coolest rides on the road—no flashy spoilers, no unnecessary decals, just raw power hiding in plain sight. Back in the golden days of muscle car drag races ...

Designed to accommodate a unique dual-snorkel air intake, the teardrop bulge is the Thunderbolt's most recognizable feature.

Dull on the outside and spartan on the inside, this 1966 Plymouth Belvedere is the perfect sleeper thanks to a Hemi swap.

As the first post-merger model from Mercedes-Benz and AMG, the C43 is becoming increasingly intriguing to collectors. That ...