I've been to this place several times in this and the last location they were in (which has since become its own T&A restaurant called "The Grill Next Door" if I remember right).
Originally I started coming for the novelty of it all, but now whenever I'm in the Phoenix area I make a point of having at least a single-bypass before I leave town.
The burgers have been consistently good (eating one is like trying to tackle a huge meatball sub), but since their most recent move the Flatliner fries have been drier and harder when my boyfriend and I get them.
I totally dig that they serve the "Hecho en Mexico" Coke in the glass bottles. MUCH better formula (made with cane sugar as opposed to high fructose corn syrup).