Blue and White Polaris Slingshot. The Slingshot is manufactured by Polaris Industries, in the United States (Alabama), which claims that "It's a three-wheeled auto-cycle!" It has a tilt-adjustable steering wheel, side-by-bucket seats, and does not lean. It has no roof, doors, or side windows and the whole interior is waterproof so it can be hosed down and drained out using drain holes in the floor. The standard Slingshot has two 17" front wheels and a singular 18" wheel in the rear of the vehicle, while the Slingshot SL and SL LE Edition have two 18" forged aluminum front wheels with a 20" rear wheel. All models have a double-wishbone front suspension with an anti-roll bar.