I'm pretty sure this technology has been available for awhile, but I had never seen such shit before this morning. I went to rent a pressure washer, and the fucker behind the counter suggested one of these things.
"Time Saver" is one way to summarize this marvel of engineering. It has opposing high-pressure spigots that rotate underneath the fucking thing....forget all about blasting shit with a stupid wand! That's right...20 yards of driveway turns into pushing a vacuum...just easy as hell. Be careful though...you have to hover the fucking thing into the yard a bit to get cuntplete coverage. Right about halfway down the driveway, I blasted the shit out of a yellow jacket nest...It must have been right on the edge of the concrete...I thought fire ants were biting me until I noticed the dog snapping at the air, and spinning in circles. Holy fucking shit...I got stung into Benadryl hell! Anyway, if you need to do some serious pressure washing, pay the extra dollars for one of those.