Audio problem: The section of sound effects used as the Trans-Am and the big-rig pull up to the warehouse to get the beer is exactly the same 'loop' as the effects used when the Trans-Am and the big-rig stop by the pond to give 'Fred' his burgers for lunch. Specifically, the Trans-Am's engine idling down to a stop, then the T/A's door closing, then the big-rig's air brakes squealing a very distinctive sound and finally the big-rig's engine rattling to a stop. Exact same 'loop' both times.
Audio problem: When the one police officer says "Headquaters, disregard my last transmission", he is upside down in his car. When he says that though, his words are out of sync with his mouth. (01:20:00)
Answer: My guess is the 2-headed bird on the Bugs Bunny with the vampire. I believe the bird's name was Emily. She also resembles Clarabelle or Jennifer Morrison (one of the moonshine sisters) from the Andy Griffith Show episode "Alcohol and Old Lace."