The meta answer is "CHEVY CHASE", (and you're not).
The key to this puzzle was noticing the four "Chevy" models on the left side of the grid adjacent to the four synonyms for "chase" on the right. The title - "Celebrity Hound" - also followed the same convention. The central GASOLINES at 20-Down was intended to provide a hint for the cars.
That's it - short and sweet! This was one of those metas where you either saw it or you didn't. Like I mentioned on the Zoom, my wife Erin gave me the idea for this puzzle. We were driving along, and I was telling her how meta ideas can be found most anywhere. Just then a Ford passed us, and I used it as an example saying it could be a car, a person, or a verb. "Like Chevy Chase," she said. Bingo!
Thanks everyone for solving!
Smooth seas!
Cap'n Rick