I remember that A&W had pizza burgers back in the early 70s. On a trip out to my childhood friend's aunt's farm in western Minnesota about 1970, we stopped at an A&W for lunch. I ordered the pizza burger. I only had it that one time, but the extremely tasty flavor stuck with me ever since. I remember really liking it. I think they put the cheese or the pizza sauce inside the patty, much like a Jucy (Juicy) Lucy and the flavor exploded in your mouth when you took a bite. Ahhh, wondrous youth and the flavors of long ago. Unfortunately, they no longer make them.