The only thing that surprised me with the system is the very slow final rinse.
I also tried the system for the first time the other day, and I agree with Frank. I may be the only dummy who has something negative to say, but for me it just adds another step in washing.
Normally: rinse car, wash with bucket and sponge, rinse off soap, then finish by using a leaf blower to blow off all the droplets of water (which works well, because of all the wax on the car).
With Mr Clean: rinse car, wash with the nozzle on "soap" setting and a sponge, rinse off soap, USE THE "NO SPOTS" SETTING ON THE NOZZLE TO RINSE THE ENTIRE CAR AGAIN (AND AS ALREADY MENTIONED THIS IS A SLOW PROCESS), then dry the car with the leaf blower.
I thought that maybe the "no spots" rinse would facilitate quicker drying with the blower, but that's not the deal. And that final rinse is painfully slow.
Just my .02. But, hey, it IS an inovative product, if you don't use a leaf blower for drying.