Total bologna.
There are car detailing pressure washers made specifically for this purpose. The key is low pressure and high GPM water flow.
You need a filter on a leaf blower, but nothing is in the air when you drive 80MPH down the road? ROTF!
Step 1: Foam cannon, allow to dwell for ~5 minutes
Step 2: Rinse
Step 3. Foam cannon 2nd time, no rinse
Step 4: Hand wash with appropriate microfiber mitt*
Step 5: Final rinse
Step 6. Dry with leaf blower w/ Stubby Nozzle
* No need for 2-bucket method if you START with foam cannon as described...
I hate to break this to you, but those who work on the assembly line do not design the vehicles. They build them how the engineers design them.
Anyone who thinks these were simply "overlooked" or "missed" by the engineers knows NOTHING about the design and engineering process.
Point being...
Just because you buy a football and call yourself an athlete doesn't mean you have the legal right to start manufacturing and selling players jerseys and other items.
They have custody and control of it as part of thier business servicing it. If your laws are so convoluted that they can destroy your car without any responsibility, I feel sorry for you.