Yup not really a micro car, but an Austin 7 is a cycle car and so small it very nearly is a micro. Then there is the Rytecraft connection so this certainly is a cousin of micros. David Brown tractors were also used as tugs, often with extra bodywork, but they tended to be used for bigger planes like bombers, this mini tractor would struggle to tow a Hurricane, probably only for towing light basic trainers like de Havilland Tiger Moths, Miles Magisters and Percival Proctors. Rare and very nice!
Oh yes, David Brown of tractor fame is also the DB of Aston Martin fame.