At 08:33 PM 2/22/2011, Karl Wolz wrote...
>Is there no possibility that you nodded off and forgot to replace the
>cap at
>last fillup and only noticed it now?  The main reason I have a locking
>is
>that I regularly leave the non-locking variety at various and sunder
>filling
>stations.  If I leave the ignition keys in the cap I have a real hard
>time
>forgetting the cap.

My cap tucks nicely in the sliding door handle - so that's where I put
it when filling. It's pretty obvious, being so close to the fuel
filler, and it would take a pretty good bump to knock it out...