Several outlets are highlighting sleeper cars, which are vehicles that have more power or performance than their appearance would suggest. These cars can be found on the new and used markets, with some being identified as affordable options and others being noted for their high horsepower. The definition and examples of sleeper cars appear to vary, with some outlets focusing on specific types, such as sedans or wagons, and others discussing them in the context of video games or seeking opinions on the best sleeper car of all time.