I use an automatic car wash (next to the kit car!!) for many years. A very good option is a technical flush with active foam for 12 rubles + you can wash off the mats for 3 rubles, it's cool especially in winter, wash off salt and reagents from the car, and the guys wash well, so Ivan is always diligent about work.
As an improvement, my wish would be to add a bottom sink to the technical flush, no one has this nearby, quickly, conveniently and efficiently.
I recommend a technical flush with foam!
The cleaner washes the main sand before washing, for which we are very grateful. Regarding the bottom washing, which is stated in the program, there probably is. But everything is very fast, If the brushes had been passed a couple of times, it would have been fine. As it is, dirt knocks down, cleans, but at a grade of four. In any case, well done for having such a sink, but if the program were changed, it would be cool to use 2 brushes at once.
Washing takes place without delay and promptly. If there is a queue of three or five cars, then you can safely join, there will not be a long wait. Technical flushing occurs at the beginning of the process in manual mode, then the equipment starts washing. The washing is done well, there is not enough additional water blowing (there is still water that needs cleaning, otherwise there will be stains).