Imo...and I'm no trader!
We're headed for banger territory, that's for sure. Inevitable fact of life, and the motor trade.
Will take along time yet to get through that and, maybe out the other side for some cherished cars, which will one day be classics. As a daily with 118k, (and a tow bar) I'm realistic and don't expect mine to make it. Likely will rust out or be stuffed through a hedge? Meanwhile, I'm enjoying it daily too!
Yours sounds like it has a better chance!
A colleague of mine has recently paid £35k for some sort of 80's Escort Cossie. Not my thing, but there's plenty that will really pay, even for "classic" hot hatches.
Another 5k would get you a reasonable DB9, but that too is not an "investment"...yet, perhaps a bit liiee your eddy? The DB was my plan until the @rse dropped out of oil n gas offshore, so dosh will stay pension bound for now.
So, it's face-up and bail out now, or park yours in a barn for another 10 years and keep your fingers crossed that the whole "classic" bubble doesn't let you down.
(Thinks back to my XR2, '68 Cooper S, TR6, Karmann convertible Beetle etc.....wish I'd had a barn then!)
Would you be willing to share with us the difference between your trade in figure, and private sale "value"?