Set up properly, which almost no one knows how to do, including most responders here, Roller Cam brakes are incredibly powerful. I have them on my recumbent tandem and can lock up both wheels on dry pavement, with 2” wide street tires and 370 pounds of riders.

That “Chunky but Elegant” bike was actually locked, just not to anything. There is a common Dutch wheel lock where the rear brake is on most bikes here. And it is expensive because it has electric assist. A 250W motor (EU limit for that sort of bike) is in the oversized front hub and the battery is in the oversized…