You would not want a "coating" to come off [I believe].
Titanium is such a "Hard" metal that the residue of the release might cause some
difficulty in the lubrication system?
'Memory being so imperfect,I could'a sworn they were talking about almost an
impregnation of the Titanium into the surface of the friction bearing metal(s)
rather than a coating.[less wear,better lubrication]

Craig,
The new industry you suggest would involve almost , "The Emperor's New Clothes" sales approach , since there would be
no visible recompense to the vehicle's proud owner.('never mind that the "improvement[s] would be under the hood AND
inside the engine) Still it has potential...Any group willing to spend $12,000.00 U.S. for wheels on a car whose actual
value is less than $10,000.00 can and will be "Sold" anything...with the RIGHT sales and peer pressure.