Continuity mistake: In the scene near the end where Pablo Chacon is holding a gun to Melissa's head and telling Don Fitzgerald to give him the gun and mug, we see the gun pointed towards Melissa for the front shot, but in the next shot where we see Don giving Chacon his gun and mug, the gun is pointed towards the ground. (01:44:10)
Continuity mistake: When the Millers and Fitzgeralds are playing Pictionary, Melissa draws a little stick figure with a hat, the camera cuts to Kenny for his line, when they cut back to Melissa the stick figure with the hat is missing. In fact all the drawings are slightly different. (00:57:25)
Answer: Don.
No, he was driving Fitzgerald's RV.
Nobody is driving; they're all in the Fitzgeralds' RV.