So you want to belt out some tunes — you could go to a karaoke bar, or just let it come to you. The RVIP Lounge & Karaoke Cabaret is just what the name suggests. The company has two overhauled RVs that show up to music festivals and events like South by Southwest, where the owners came up with the idea of adding wheels to a karaoke bar. Companies sponsor RVIP’s appearances, so it’s free for people to climb aboard and belt out their rendition of “Livin’ on a Prayer” or “I Will Survive.”