McLaren P1 hot-weather testing in southwest United States

The McLaren P1 underwent some hot-weather testing last week in California. The first deliveries are scheduled in the coming weeks, coinciding with the company's continuing 50th anniversary celebrations.

Lucky for us, McLaren recorded the hijinks, added some music and uploaded it to YouTube.

For the uninitiated, the McLaren P1 uses the 3.8-liter, twin-turbocharged engine from the McLaren 12C -- tuned to make 903 hp and 663 lb-ft of torque with help from an electric hybrid motor. Power is fed through a seven-speed dual-clutch transmission to the rear wheels. Pirelli P-Zero Corsa tires wrap those wheels in front and back, measuring 19 and 20 inches, respectively.

The P1 in the video is finished in carbon black for its first undisguised road run before the first of the 375 examples being built is delivered. While testing, engineers saw temps rise as high as 126 degrees Fahrenheit in Arizona, California and Nevada.

In other McLaren news, a source close to Autoweek has heard rumors of a N

By Jake Lingeman