Chariot racing British-made Carden Loyd tankettes, c. 1929.
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Previously:
https://www.homemadetools.net/forum/...724#post170760
https://www.homemadetools.net/forum/...293#post165700
https://www.homemadetools.net/forum/...072#post164818
https://www.homemadetools.net/forum/...951#post164256
https://www.homemadetools.net/forum/...865#post163966