The Velotric Discover M e-bike we reviewed earlier this year had a feature I found somewhat annoying: It would sporadically block much of the display with an alert telling me I should be in a different gear. While the implementation bugged me, the concept made a certain degree of sense; most e-bikes now know your cadence, how much torque you're generating, and how that power is being translated into speed. That's everything you need to know to determine an optimal gear.
Somewhere in the back of my mind, I thought, "If you're so smart, why don't you just shift for me?"
I was completely unaware that Shimano had already developed a system that did exactly that. And for the past few weeks, I've been using it on a $4,500 cargo bike from Xtracycle called the Swoop ASM that let me see what it's like to hand control of my gears to an electronic brain.
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