Electric bikes are an intriguing transportation alternative, but four- and five-figure price tags are just too much for many people to spend on a limited-utility, low-range electric vehicle. That price looks even steeper for those that already have a perfectly functional pedal bicycle sitting at home. Japanese-Swiss company Sunstar hopes to make e-bikes a little cheaper and more versatile with its modular Virtus electric drive that transforms a regular bike into an e-bike, then detaches in minutes, effectively giving you two bikes in one. ..


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