Tuner model based on the Porsche 911 gets taken for a test drive with all of its 730 PS (537 kW / 720 bhp) and 940 Nm of torque (693 lb-ft) at work.

Here's one of the few videos that actually shows a tuner model in action.

This is the RUF Rt 12 R based on the Porsche 911.

The car features a highly-modified 3.8 liter Boxer engine which now gets a twin-turbo unit that dials up output 730 PS (537 kW / 720 bhp) and 940 Nm of torque (693 lb-ft).

Gearbox is a six-speed manual and the RUF Rt 12 R comes with an all-wheel drive system that features an optional rear-drive only setting. The car also comes with an adjustable suspension.

Top speed is 370 km/h (230 mph).

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RUF Rt 12 R based on the Porsche 911 - test drive [video]