The new 991 Turbo S is a very expensive car. So expensive it probably must fend-off more exotic machinery, like a yellow McLaren. This could get messy.

This week on /CHRIS HARRIS ON CARS, Chris puts the pricey, speedy, cornery new Porsche 911 Turbo S up against the McLaren MP4-12C (now just 12C) on road, on track and on a drag strip — a launch-control showdown for the ages.

The question to answer here is, if performance were similar, would you have to have an exotic supercar, or would a sports car of less rarified pedigree suffice?