Complex sentence: A notchback, the "notch" referring to the shorter trunk usually found on compact or mid-size cars, unlike typical full-size sedans; and notchbacks usually have a near vertical drop-off from a car's roof to its trunk unlike fastbacks and hatchbacks.
Split into simpler sentences: A notchback, the "notch" referring to the shorter trunk usually found on compact or mid-size cars, unlike typical full-size sedans. Notchbacks usually have a near vertical drop-off from a car's roof to its trunk unlike fastbacks and hatchbacks.