Thanks BarmyFotheringayPhipps and Allstonian!
My cheeseburger was just as you described, a griddled fast-food-shack-style affair. Wrapped in paper, great flavor to the meat, nice soft bun, fresh toppings. Only minor gripe was the somewhat pale tomatoes; everything else was right on the money.
Excellent thin-cut fries, again cooked to order.
My 6-oz super cheeseburger was $4.15. Combo with fries and a coke was just over $7. I'll definitely be back.