While the buttery smooth Rolls-Royce V12 engine is still considered the ultimate representation of a luxury powertrain, the automotive market is steadily accelerating towards going all-electric. However, hybrid engines are clearly the middle ground, as they proffer the merits of both conventional gasoline and futuristic electric powertrains. Hybrid engines started out in economical cars and gained fame for their exceptional fuel efficiency, with the Toyota Prius being the best example. However, most of these cars were criticized for their peculiar designs and lethargic acceleration, which were always the disadvantages associated with a hybrid car.