Where can I purchase a good motor speed control?

The parallel hybrid variant featured 1.3 L turbocharged DTI diesel engine from Isuzu delivering 75 hp, installed in the trunk along with an additional 6.5 hp DC motor/generator; the two motors drove the rear wheels through an electronically controlled transaxle. When combined with the AC induction motor which powered the front wheels, all three power units delivered a total output of 219 hp, accelerating the car to 0-60 mph (96.6 km/h) in 7 seconds. A single tank of diesel fuel could keep the car running for 550 miles with a fuel economy of 80 mpg.