2020 is a landmark year in the five-year history of the Polaris Slingshot line. With 70 percent of the Slingshot new, including the Polaris-built engine and the introduction of a fully automatic transmission, it is time to reassess this groundbreaking and unique vehicle. The 2020 Polaris Slingshot SL has AutoDrive, and we drove that first.

1. The Slingshot is a distinctive option in the three-wheel world. At one end of the three-wheel spectrum, you have the Yamaha Niken, which is a motorcycle that happens to have two wheels in the front. In the middle, you have the Harley-Davidson trikes and the Can-Am Spyder. Both the H-D and C-A machines have motorcycle seats and a handlebar, though neither lean in corners. The H-D has its two wheels in the back, with C-A opting for two wheels up front. 
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https://ultimatemotorcycling.com/2020/08/26/2020-polaris-slingshot-sl-review-17-fast-facts-on-3-wheels/