Ok, how about we phrase it this way??? The OP was there, in the area of that most happiest of places in the world, when someone came along and ruined the magic for him. Hah!!! Made it about Disney.
Any way.....perhaps, just perhaps, the OP didn't have as much room as he thought he had when he moved in front of that SUV. Maybe, just maybe, the SUV driver was surprised since maybe, just maybe, he had been adjusting his AC, so didn't notice the OP moving in front of him...and he got annoyed. So, maybe he figured he would 'show' the OP....jumped behind him and tailgated. Yep, that sure showed 'im didn't it??!!!
All in all...the OP should have just moved over, back into the middle lane. He said, in the original post, that there were no cars in front of the SUV, in that middle lane, so the SUV had no need to move over and tailgate. So, why couldn't he, the OP, have just moved over into the empty lane??? Or, if it was so empty, why didn't he wait until the SUV had passed him and then moved into that lane behind him???
Ah!! See...many different scenarios that I can imagine. There is fault all around.
Have a magical day!!!