A few days ago we filled up the tank, then drove about 50 miles. Yesterday morning the gage registered nearly empty with the computer readout saying "55 miles remaining". Had someone siphoned out most of the fuel? Not really a possibility, but we filled up the tank, only to find that it was, in fact, already nearly full. So the gage was playing up?
We continued to drive, confidant in the knowledge that we had plenty of fuel. The computer registered fewer and fewer miles remaining and the needle continued to fall toward empty. Finally we had no fuel left, according to the readouts. Yet we continued to be able to drive!
Wonderful, we have a car that runs on air!
The bad news is that there is something obviously wrong and that something is probably not cheap to fix.