The first time I exited the highway at speed on my new bike with ABS I had one of those "Oh SH*T" moments when it didn't seem to be stopping. I'm still not sure what happened exactly, but it wasn't slowing down very much at all. It eventually did, but if traffic were worse or the exit ramp was shorter ..... might have been bad. I've tried it a bunch of times since then and it seems to do OK, but it always bothers me when an electronic component steers, accelerates, or stops your car without a mechanical link to fall back on. And that's where every manufacturer is going.
Later, Jim