Audio conglomerate Harman International had plenty of goodies on display at the CES trade show in Las Vegas this week. Front and center were a 2013 Dodge Viper with 4G wireless from Sprint built-in and a prototype infotainment system that you can control with a whisk of your hand. The Viper's hot-rod hotspot connects to 1,400 apps like Facebook and Twitter. (Audi also unveiled its 4G wireless-equipped A3 at the show this week. Check out the video below for a look at both. Go here for Forbes' complete CES coverage. )