I have an American pink-nosed pitbull (American Staffy vets says to call them now due to bad owners) we call her a suck bull as she has not got a violent bone in her body. She has a fetish for white vans especially Toyota hiaces( and now my trailblazer). When she sees one she just gets in them and she jumps in the passenger seat and howls! (I owned a van once for many years and would take her everywhere with me back when a pup). Now I took her for a walk up the beach a while ago and after our walk, I stop and watered her at a tap where she proceeds to slip her lead and bolts straight for a white van full of backpackers stopped for lunch in the car park at the beach and true to form straight through the side door and into the passenger seat and starts howling.. well I have never seen German backpackers move so fast in all my life, Usain Bolt had nothing on them as they cleared out of that van screaming and c*** flying everywhere! After calming the situation and explaining to them her fetish and a few belly rubs for the dog later all was good ( and many selfies with my dog by the backpackers) I now use a harness to walk her and also in the car as she really loves vans and trailblazers!