I think there are still uses for a good old hose. I am now officially spoiled by ONR and have not done a conventional wash in many, many months.
However, a good old hose and some shampoo and degreaser works great on tires and wheel wells like I would never get with ONR. Especially for blasting sand and stuff out of wheel wells in the rear - only a hose will do.
Also, for thoroughly washing windows once in a while, only a hose will do, too. I've noticed that that little fuzzy thing below the window collects dirt and such. I don't think ONR really "cleans" that, and as such, the next time I put my window down and up (after everything has dried, many hours later), it will have dirt streaks on them!
Shampooing the windows and rinsing them with a hose seems to alleviate the problem. I think if some type of product at least just trickles down past that little fuzzy thing that is enough to "clean" them up. It may work if I just squeeze the ONR mitt while going over them. Not sure.