Garage floor advice

Hi Guys-
I finally cleared out my 12'x20' (uninsulated) detached 1 car garage
and plan to store my '68 Barracuda there.
I have sealed all visible cracks with Great Stuff
and just had a roof vent installed.
Need advice on the concrete floor.
It is in very good shape (had new one poured approx. 7 yrs. ago),
clean, no cracks.
I am worried about water vapor coming up and rusting car.
Should I paint with something like: DRYLOK® E1 1-PART EPOXY FLOOR PAINThttp://www.ugl.com/drylokMasonry/floorAndExteriorPaints/e1.php
or get one of these (easier, more expensive) mats:
http://www.bltllc.com/g-floor_main.htm
...or both?
Live on Long Island, NY and we get some rough winters!
Thanks, Rick