This looks to be what you're talking about, but big bucks....

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&category=6763&item=
2455598721

If memory serves, Mercedes also had something similar
aljay

> Carl Hansen wrote:
>
> >... dang it I hate that.  what ever happened to Gas Stations that have a
> >beat up old gas tank to borrow?  I had to walk 2.5 miles in the dark,
> >temperature 20 degrees, then a guy who pulled up to the station while I
was
> >getting a bit of gas couldn't be bothered to schlep me back to the car!
> >
> >At the station, you had to buy a cheap can for $4, they didn't even have
a
> >two liter bottle I could empty to bring enough back to get to another
> >station.  The can was so cheap it didn't have a vent, so it wouldn't
empty
> >into the tank very well at all.
> >
> >Must be the gawd forsaken state of New Jersey!!
> >
> >So I can't find the thread on the spare gas can that fits in a spare tire
> >(Vanagon list, in the last 6 months.)
> >
> >Can anyone remember/recommend where to buy a good "fits in the spare
tire"
> >spare gas can?
> >
> >TIA
> >
> >Ch
> >carl_hansen@ieee.org
> >
> >'96 GLX Passat Wagon - they were all green - weren't they?
> >'87 944 na - RED! needs head gasket & tires (but what a sweet ride)
> >'89 SyncroBeast Vanagon - parked for the winter - boo hoo
> >'87 16V GTI - dead, needs rings
> >'80 850 Yamaha Special - burns oil
> >'89 16V GTI w/ toasted motor - needs tranny
> >'99 Beetle - red, red, red (SO's)
> >
> >New Jursey (Gawd Forsaken State of)
> >(our hearts remain in MinneSnowta)