OFF WITH THEIR HEADS
For an open-roof driving experience, the GT C Roadster clobbers the 911 Targa. The AMG’S roof itself is superb; a three-layer design with an acoustic mat sandwiched for sound insulation, and wrapped over a magnesium/steel/aluminium structure. It lifts or stows automatically in 11 seconds at speeds of up to 50km/ h, while integrated rollover bars in the rear bulkhead take care of protection. The Porsche’s Targa takes twice that time to retract or raise, requires the car to be stationary, and the buffeting is like having a pair of cold hair dryers pointed at your bonce. We get the retro-cool vibe, but the 911 Cabriolet ( or Boxster S) makes more sense if you’re an open-top type.