What does good enough mean? It might not be capable of recovering 100% of the energy. And it would be a wonderful thing if it could. But that's not the only wa

What does good enough mean? It might not be capable of recovering 100% of the energy. And it would be a wonderful thing if it could. But that's not the only way to define good enough that might be relevant here. Many electric vehicles have a greater range in city traffic than they have on the highway, which is the opposite of how it is for ICE vehicles. So that means the benefit is quite significant, enough to help with cost savings. Also, stop/start driving creates a lot of wear and tear on brakes. Maintaining brakes is probably a significant part of operating costs. If regenerative braking can reduce those costs, even if it doesn't eliminate them, it could still be significant.