I agree - great video. Way to move along the plot! 
 
So no one has asked 
why they're out driving around? I agree, they could have followed Lucy's car. Or, as some said, they could have checked into a motel or found somewhere safe in the next state to hole up, or even stayed with a friend of Daniel's.
So it really appears to me - based on the fact they're driving around - that they're just killing time. I'm guessing Bree's parents were taken to lure B&D in and make her go to the ceremony. What if B&D are just killing time until after the ceremony is supposed to take place, and then they come back, and since the date is past, the cult/religion can't do much about it?
Because we all theorized they were going to go on the road to solve some mystery, but right now they're just driving around randomly. Either they'll be given clues (perhaps Bree will try to call again?) or they'll come back when things are safe...