The way I see it, if I was her I would recognize that the car has some kind of important meaning and value to my husband. It may not be the car itself, but the meaning behind the car, ie. he has fond memories working on a car bonding with his dad when he was young, or its a way to help him think, relieve stress, enjoys building and creating things, bonding with 'the guys', or just a good hobby. With that said, if the car was collecting dust for years and not being worked on, I'd say that its time to let it go. It is serving no purpose, and if we are able get some money for it to be able to put towards something that is more useful, then it only makes sense to sell the thing.