Most 12-volt DC-powered TVs for RV don't have built-in smart TV functionality, though a few newer models come with the ability to connect to WiFi. However, you can connect a Roku, Fire Stick, or Google Chromecast to any TV with an HDMI port and turn it into a smart TV. The main problem is the lack of stable internet connectivity during your travels, especially while driving. Unlike your smartphones which can operate on an average internet speed, a fast and stable internet connection is vital for a smart TV to use its features, or it is just a standard TV.