$7699 - The Tern HSD S+ is the top model in Tern’s new line. With so many features and options, the HSD S+ could be described as the Swiss Army Knife of e-bikes. The step-through frame, adjustable stem and seatpost make this a one-size frame fit for riders. Powered by a 250-watt Bosch Performance Line motor with smooth, automatic shifting via an Enviolo Sport 380 hub and a Gates belt drive, you can haul up to 374lbs. The bike comes equipped with an Abus keyed-alike frame lock, mammoth rear rack, suspension fork, hydraulic disc brakes, fenders and front and rear lights. A slew of accessories are available, and the bike can be flipped upright for vertical parking or elevator rides and can be flat-folded in 15 seconds to load onto bus racks or into SUVs. The SRP is $7,699.