I would play the long game here. Start looking into collecting classic cars. But not cheap ones. Spend a few months dragging her to car shows and express an interest in the jaguars. Start looking at rare projects online.
When she thinks you are well and truly hooked and ready to drop 60k on a car that needs 100k of work tell her that you'll give up on the car and stick with pinball but only if she stops being captain buzzkill about it.