The Dodge Viper hasn't been a big seller, but Dodge has seemingly found a formula for selling its powerful snake: kill it and announce a bunch of special edition models. Four of the five special editions Dodge announced just last week have already sold out, and now Dodge is offering a new one called the Snakeskin Edition ACR. Get it while you can.

We haven't had a Porsche GT2 in awhile. That's likely because the latest Turbo models were already offering better performance than previous GT2s. We thought the GT2 might not return, but Porsche has confirmed that it will. We spotted what appears to be a GT2 undergoing testing, and it looks mean. Expect it for the 2018 model year.

In the early 1960s, a Texas chicken farmer named Carroll Shelby stuffed a Ford V-8 engine into the British AC Ace. Thus was born the first Shelby Cobra. That particular car was dubbed CSX 2000, and now it is going up for auction. Shelby and Rob Myers of RM Sothebys knew each other, and CSX 2000 will be sold at the RM Sothebys auction on the sidelines of the Pebble Beach Concours in August.

You'll find all of these stories and more in today's car news, right here at Motor Authority.

Viper special editions sold out, Snakeskin Edition ACR added

2018 Porsche 911 GT2 spy shots

World's first Shelby Cobra headed to auction

2017 Porsche Panamera to start at $100,950

McLaren P1 LM car breaks Goodwood Hillclimb record

Turning pig poop into asphalt

Ex-Apple engineers create solar-powered backup camera

Tesla 'self-driving' mode linked to first traffic death in potential setback to autonomous cars

VW thinks it can fix 85,000 V-6 diesels from Audi, Porsche, and Volkswagen

Will Mercedes start an electric-only sub-brand (like BMW i)?