Amusing, but also BS. I wore a mask while alone in a car for a damned good reason - I had Covid and was in a rental car. I also drove the 6hr I had to with the windows down to leave as little Covid as possible in the vehicle for the next person who had to drive it. When you come down with Covid while away, your options are somewhat limited so I had to do the drive and the Covid was pretty mild for me.
I came down with a severe stomach bug and had one of the company trucks here at the house.
My wife simply fogged the cab of the truck with half a can of lysol after she left the keys in the cup holder.
This way my coworker could have his wife drop him off so they could have the work truck the next day and he didn't risk getting sick.
He did have to leave the doors open on the truck and let it air out the lysol fumes before attempting to drive
The car rental companies had cleaning policies in place to protect their employees.
One of those policies was a fogger for inside of vehicles to fog the interior with disinfectant.
Your precautions though thoughtful, were unnecessary.