Polaris RZR is a side-by-side vehicle but could be classified as a UTV (utility-task vehicle) if used for work and productivity purposes. Side-by-sides (SxS) differ from ATVs in that they are typically designed for two or more people to sit side by side. Most, like Polaris RZR, are equipped with a roll cage and a steering wheel. Learn more about side-by-sides and UTVs.