I spotted this caravan of 991-series Porsche 911 Turbo prototypes on the drive home from Los Angeles after I returned from the Frankfurt Auto Show. Quite convenient really, as I had just watched the world premiere of their naturally aspirated sibling in Germany, and I even had some photos handy to make sure these prototypes [...]Related posts:

  1. Quick Drive: 2011 Porsche 911 Turbo Cabriolet
  2. Spied: 2012 Porsche 911 GT3 Hybrid
  3. Spied! 2013 Porsche Boxster Prototypes