That may be it. I found a reference to episode 15, no name. I have the Jetsons Season 1 DVD and in that episode 15 is Millionaire Astro, which doesn’t have a Dial-A-Meal. I’ll watch Test Pilot today.
The program made almost a fetish of ignoring continuity if the writers could come up with a new gag. I don’t think we ever see a four-person car outside of the opening credits. George usually flies a single seat car unless he needs a passenger seat, in which case the car somehow knows that when he drops into it. (He can drop directly into the car but has to take an elevator up.) The Foodarackacycle (fandom spelling) or Food-a-Rac-a-Cycle was in the first two episodes. After those food was in several more from other gadgets, including a Dial-A-Meal. Oddly, I don’t think they ever showed a telephone with that old-fashioned dial