2010 Dodge Viper SRT10 ACR-X A track-tuned Viper with a full cage, single seat, and more V10 horses than any other Viper should set you apart from the competition. Here's a car that was built for those with enough enthusiasm (read: guts) to match its performance capabilities. Don’t even try to step to this unless you have got what it takes to handle the Viper’s bite.