Bob, I had to check this out. You are, of course, correct. That's the same Cadillac Eldorado that Tommy is driving way up there in Bakersfield that he later is driving around the Los Angeles area. And yes, in between he and his battle-ax wife and nymph arrive at the BF airfield in a different car. Maybe a four-door Nova or Chevelle. Good eyes on that one. I've also watched the episode umpteenth times and had never caught that before!