[Geoff Winnington-Ball (RIP)]

You may be on to something, but I suspect that by the end of '41, vehicular transport out of the Philippines was last on the list of priorities.

Since this book was just published this year, I think I will send a message to the author via the publisher's website and see what I can find. He was very definitive in describing them as 'Bren Gun Carriers', so I believe he was talking about Commonweath carriers... just how they got there is one story which needs to be uncovered.