Trademark laws dictate that you must go after anyone caught using all or a portion of yours. I used to run a multi million dollar company and we had to go after people for trademark infringement all the time. If you allow it for one person you could lose your trademark in a future court battle. Companies like Apple, BestBuy, Microsoft have got to protect their trademarks, they are one of their biggest assets. The fact that this guy is a priest is irrelevant, the logo and even the make of the car is too similar to what BestBuy uses. Allowing him to continue would give the impression that other companies or individuals are also allowed to use similar logos.
One good case was the one of Microsoft vs MikeRoweSoft
I own many trademarks and will defend them against ANYONE trampling in my back yard. It is no different, in my opinion, because the trademark is licensed to me for 20 years. After that (according to Canadian law) it comes up for review, but in almost all cases it is re-issued to the original license holder.
