Auto Butler has been around for close to three decades.
The system is purchased by dealers to create added profit in the deal, but also to provide some lot protection to their inventory.
They use a "spray on" highly liquified polymer sealant solution, followed by running the vehicle through an automated "sort of polishing" machine.
Three years-it's gone, was gone within a year or less, so don't worry about it, just do what you feel is right for your vehicle.
I set up a similar system for the Ford Pre-Delivery Center in Mira Loma, Ca. back in the early 90's for them.
They predelivered over 2,000 new Ford's to the dealers in southen California every week.
Grumpy
Grumpy