It's what me real nervous about buying used last week lol.
You needed a car, you bought a car you like, with plenty of life in it, at a price you can live with and presumably bought it outright in cash. If it's trading for a few grand less 6 months from now, does it really matter? Just keep it, drive and enjoy.
If you're a dealer and you're buying something for the purpose of reselling, and/or your borrowing for it, then it matters....Nobody want to be paying interest on an asset that's depreciating like a rock.