I don't know what to tell you about a car cover. I had to keep my Graphite outside for almost three years. I bought one cover, can't remember from where. I think it cost around $150.
I was sorely disappointed. Seemed like the car got more dirty with it on there than without it. I suppose if I'd paid $400 maybe I'd be happier. As it was, I gave up. Totalled the car anyway so I guess it didn't matter after all.

You MIGHT try putting a thread HERE:
https://www.crossfireforum.org/forum/exterior-lighting/

or HERE:
https://www.crossfireforum.org/forum/all-crossfires/

And call it "What car cover do I want?" or something like that.
We have a handful (or more) of members who use them. I've even heard of people storing their car for winter under a cover outdoors.