A crossover, crossover SUV, or crossover utility vehicle (CUV) is a type of sport utility vehicle-like vehicle built with unibody frame construction. Crossovers are often based on a platform shared with a passenger car, as opposed to a platform shared with a pickup truck. Because of that, crossovers may also be referred as "car-based SUVs". Compared to truck-based SUVs, they typically have better interior comfort, a more comfortable ride, superior fuel economy, and lower manufacturing costs, but also inferior off-road and towing capability. Forerunners of the modern crossover include the 1977 Matra Rancho and the AMC Eagle introduced in 1979.