Porsche 911 Speedster spied again

A prototype believed to be the Porsche 911 Speedster has been spied at the Nurburgring in Germany this week, indicating a GT3-based drop-top 911 is headed into production. Earlier this month Porsche revealed the 911 Speedster concept, created to celebrate the brand's 70th anniversary. It's based on a Carrera 4 Cabriolet, but uses the powertrain and mechanical package from the 911 GT3 track hero.