Porsche unveils the new 911 GT3 RSR
Porsche decided to pull the wraps off the new 911 GT3 RSR, a model based on the previous generation known as 997. The new German racing model is ready for the 2012 season and comes with slightly more power under the bonnet. To be more precise, the 4.0-liter six-cylinder boxer engine is able to deliver 454 horsepower over the 449...