Yeah, if you're to the point that you need a fuel cell for your power needs, you shouldn't care about using your hatch. Not to mention, it's safer in there, and easier to get to.
1992 Eagle Talon TSi - sold (POS)
2002 Mustang GT - sold
2002 SVTF - sold
2008.5 Mazdaspeed3 GT - cursed
2003 350Z Track - basically stock, and it runs