[Tigers] garage floor coatings

[Peter L]

couple questions for the group on the "perfect garage":
 
(1) how important is it to seal concrete in your garage to prevent moisture
from coming up and through and over time causing potential corrosion in your
tiger/car undercarriage?  not looking for the practical answer ("it'll be a
while...", etc...) but if you were setting up a garage to be the perfect home
for your perfect tiger.
 
(2) what sealers do the job best? (acrylic? colloidal? polys? epoxy?)
 
(3) does a heated garage (in winter) mitigate the moisture seep from concrete
to the point that its irrelevant?
 
thks