I am curious how a Tucker equates to food ?
Not sure Bruce, just a word that I've grown up with so it sounds natural to me.
Google says -
"This is some great Aussie slang for food that has been in constant use since the 1850s. The original meaning is of a meal, that is, something to be tucked away (in the stomach)".
Whether they nailed it....not sure, could be a furphy.
I know this is a rather farfetched reach, but we used to bring in food and supplies to the Research Station, when the road was closed to snow, using a Tucker Snow Cat, as long as the lower part of the road was still open. If not, everything including us, was brought in by helicopter!