Ed Begley's Prius this isn't.
After months of speculation, McLaren officially announced the powertrain for its forthcoming P1 supercar. It's a plug-in hybrid.
The car, which will officially debut in production form at the Geneva Motor Show, will have a total of 903 horsepower and 663 pound-feet of torque, the company said Wednesday.
That incredible output comes from two sources. The first is a twin-turbocharged 3.8-liter V-8 engine that makes 727 horsepower. It's...