If the bike is in fact similar to the EB-5, then it is probably a great around-the-city or campus electric bike, but perhaps not the best long distance commuter for rough roads. Though considering the bike won’t ship for at least another 4 months and the US shipping cost will bring the total price of the Spark Drive Mini to $499, impatient riders might be better off with the equally priced and Amazon-shipped EB-5 anyways.
The Dail-E Grinder is perfectly designed to accompany you on your long commute. It's a top-of-the-line road bike in and of itself. BULLS has taken its premium frame and integrated it with the most advanced components from best names in the business. It delivers an unbelievable 118 miles range under ideal conditions. This step-over speed-pedelec is a wonder of German engineering.
The F1-trained engineers at William Advanced Engineering assisted with the electrical parts and the result is a 250W motor that provides pedal assistance via the front hub – which is a highly unusual approach – drawing power from a 300Wh battery pack that sits in a bag and goes on the front where the Brompton luggage rack would normally sit. You can also opt for a larger bag that holds both the battery and your spare suit or laptop or whatever.
On the other end of the pricing spectrum (although not as high-end as possible) falls the Riese & Muller lines. The Nevo line, which features a Bosch motor, hydraulic disc brakes and speeds up to 28 mph also has a roughly $5,000 sticker (a variety of models allows for a cheaper price). Using a carbon belt and Nuvinci grip shifter, maintenance worries lessen. The German-made premium models are hand made to specifications and comfort reigns supreme.