"Big hand's on 120... little hand's on E" -- TMBG
On the friday before the weekend my wife was going to drive out from NM to CA, part of the fuel delivery system broke. Kaput. Subaru couldn't get the part until tuesday of the next week at the earliest (even overnighting it), and she had to drive our friend back to CA by Monday.
Luckily, they were able to get the car in drivable condition by fixing up some wires so that there wouldn't be any sparking to cause fires, and fuel delivery was working fine.... we just couldn't tell how much gas we had in the tank. So, we just used the trip meter to tell when to fill up (we have scheduled stops that we always stop at on the trip from NM to CA and back anyway, so it wasn't a big deal).
However, seeing the "empty" gauge every time you look at the dashboard (along with the check engine light) was a tad distracting, so our friend Kristine drew up a little card to stick in front of the fuel gauge while they drove out to CA. Some thousand miles later, I'm finally sitting at the Subaru dealer getting it fixed.