Part 4-wheeler, part rail buggy, the new Polaris Ranger RZR 4 ($15,000) is the world’s first four-seat sport side-by-side. Co-developed with racer Robby Gordon — or “Reckless Robby,” as we like to call him — the RZR 4 boasts an 800cc High Output Twin EFI engine mounted behind the back seat for a lower center of gravity, a new suspension that includes Fox Podium X 2.0 Piggyback Reservoir Shocks and Chrome Moly front upper A-Arms, a rolled independent rear suspension, a true all-wheel-drive system, a 12-volt plug in and two cup holders for rear-seat passengers, cut-and-sew seats, and Maxxis Big Horn tires with Black Bruiser rims.