Show dogs have to be well trained and well socialized. Many years ago I started to show my first Standard Schnauzer, he won a few puppy and obedience ribbons, but I soon stopped doing it, I didn't like putting the dog through all that and the people at the shows were pretty uppity.
I went to a few conformation classes with him and other dogs and owners/handlers. We all had to make our dogs sit and be examined by other people in the class. So that meant looking at their teeth, feeling their coat, legs, tail, etc. Was a weird experience, but glad I did it.
Seeing a Presa at an auto shop would make me very nervous.