Yes, there are cameras with built-in HDR but the operator still has to set it up properly. The cameras have plenty of brains, they could do it themselves. Put your camera on the tripod, select HDR and push the button. The camera examines the resulting image--if there's any white in it (beyond simply noise) it fires again at +1 EV (via shutter speed only). If there's any black in it it fires again at -1 EV (again, only via shutter speed.) It keeps doing this until there is no white in the highest image and no black in the lowest. That way you are ensured the bracketing is wide enough without wasting shots it turns out you don't need.
Edit: Why is everyone thinking I'm suggesting doing the HDR in the camera? That's a post-processing step that needs a human judgment call to get right. I'm only suggesting the bracketing as the camera has the ability to figure this out easily while the photographer keeps having to mess with the camera which risks moving it a bit.