^^It's rumored that Knott's asked for permission to build across Beach Blvd and/or La Palma and were denied by the city. With that said, using a parking lot for expansion won't be an option.
^Yes, Johnny Rockets and KOD share the same building. KOD was upstairs. The building isn't the same size upstairs anymore as it was modified to house Johnny Rockets' kitchen ventilation system. Most of the building is unsafe and a lot renovation would be required to bring the building up to code in general let alone add a dark ride. Not impossible but not sure the park would want to invest time and money into that. I personally would love to see a high quality dark ride but don't think it's going to happen anytime soon.