yes it definitely does this, it gives you a little graphic to say to take your foot off the accelerator when it's doing it. But it's also slowing me down deliberately in normal traffic situations - and I don't know what is causing that. I think it's different to the regen/eco braking. This time there's no symbol to indicate it is doing it. It seems to work very much like adaptive cruise, modulating my speed to keep me a distance behind the car in front. It does it well, but it's also quite strange. I assume it's one of the front-sensor options but I'm not sure which.