About to run out of gas..

So, we were lucky to be apart of the 750,000 or so that flocked to the Titusville/Cocoa Beach area today to witness the space shuttle program's final flight.. Atlantis went off without a hitch, it was a beautiful sight.. even if we only saw it for a few seconds because of the clouds. Afterwards, we went back to my uncles' house and had lunch, even got to see an aunt I haven't seen in over 25 years :-). So, were leaving to head home now.. my husband, knowing how much gas we used and how much is left still decided to hop on the beeline and make our way home.. well, I am annoyed to announce that we are down to 1/4 tank and 41 miles to empty. We are stuck in horrendous bumper to bumper traffic, everyone trying to make their way back to Orlando.  Did I mention Carl has to be at work by 3? Yeah, that isn't happening. Looks like our next call is roadside assistance.. 40 miles to empty...