Anyone successfully play let’s make a deal

[Anonymous]

Lease ends in 5 months on my bmw. It’s in fabulous condition I think I have like 5k miles on it after three years. I mean yes I could probably just give up the car I travel so much for work and only use the car on weekends. And we have another family car too. Anyway The residual is excellent 37k compared to going rate of 45 to 55k for a used x5. I want to make a deal with the dealer. I ‘buy’ the car out, sell it back to them for a competitive price, we apply the profit to down payment on my next lease. My idea is no cash acc gets transacted in all of tthis, just the cars - they get mine to sell, I get a new x5. Would this work?