mahle doesn’t go into too much detail about how it really works, but it is a completely separate mode, and can theoretically vary assist from maximum to nothing depending on how hard you’re pedaling, the road conditions, speed, and previous behavior on the same or similar routes. i turned it on once and watched the motor power as I rode, it used a lot more assist than I normally would, but it did seem fairly “smart,” knowing that if I’m going 18 mph on flat ground without working too hard there’s no reason to burn up a bunch of juice to go 20 and bang up against the cut-off. or conversely that if I’m going up a very steep hill and going painfully slow, no matter how hard I pedal I want full power…