The 2013 SRT Viper is continuing its track testing, sussing out its final production setup for suspension, tune, and electronics controls, and along the way, it has gotten a new paint job, this time with its trademark twin racing stripes on a field of bright red. Looking good, Viper.

The Porsche 918 Spyder may get a race-ready track package, according to a new report--as if this weren't already the raciest, most seductively quick hybrid on deck for the near future.

And the 2013 Audi RS 5 is hitting dealers around the U.S., finally, after coming in a bit late on its "spring 2012" goals. Nevertheless, we're happy it's here. It will start at about $78,600 plus fees, says one San Diego dealer.

You'll find all of this and more in today's car news headlines below.

2013 SRT Viper Earns Its Stripes

Porsche 918 Spyder To Get Optional Race Track Package: Report

2013 Audi RS 5 Reaches Dealers

Car Crashing Just Got A Lot More Fun... In Videogames

2013 Jaguar XFR-S Spy Shots

2013 Ford Focus ST Rated By EPA: 32 MPG Highway

2012 Tesla Model S: Is Aluminum Its Secret Weapon?

Mahindra Finally Nixes Plans For U.S. Pickups & SUVs

2011-2013 Volvo S80 Recalled For Transmission Software Glitch