The Koenigsegg Regera has 1500 hp and no transmission

This might be the most interesting hypercar development in recent memory.

 It's hard not to think of the hybrid supercar in Darwinian terms when you come to realize that the Koenigsegg Regera has transcended the transmission altogether in a rather incredible evolution. Instead of an electric motor behind or in addition to a traditional gearbox, the transmission of the Regera has atrophied like those cave fish without eyes—replaced entirely by a trio of three electric motors. Koenigsegg calls it "Direct Drive".

A mechanical transmission is simply not needed. Instead, the 1100-hp, twin-turbocharged, 5.0-liter Koenigsegg V8 (which, in Koenigsegg fashion, makes more power on E85 Ethanol) sends power directly to three electric motors, one attached to the front of the crankshaft and providing power to both the battery and to the rear motors—one for each of the rear wheels. The battery is a 9.27 kWh lithium-polymer type, weighing 253 lbs. and located in the central chassis tunnel. When the electric motors are factored in, the total system output is a claimed 1500 hp at the crank and 1475 lb-ft (2000 Nm) of torque.

Source: www.roadandtrack.com