What is sleeper build meaning?

A "sleeper" build refers to a vehicle that appears to be plain or unassuming on the outside, but has been modified or upgraded to perform at a high level. This term is commonly used in the car enthusiast community, particularly with regards to drag racing or street racing. The idea is to surprise competitors who underestimate the performance capabilities of the vehicle, giving the driver an advantage in races. Sleeper builds often include hidden modifications such as a powerful engine, upgraded suspension, or enhanced exhaust system, among other features.