Well, to take this back to the original topic title: Promo Kit....
There were promotional model car kits, and by that I don't mean an ordinarily-assembled promotional model being distributed in kit form. In 1963-64, AMT Corporation produced several Trophy Series models of Fords, including the first release of both their '32 Ford Victoria and the stock height '25 Model T Coupe, as promotional items (model kits) for Ford Motor Company--who distributed them through dealerships.
Additionally, SMP (AMT's early on cousin) produced a promotional model kit (along with an assembled version) of the 1911 prototype Chevrolet. This kit was never sold through hobby shops in any form, Chevy Dealers only--and AMT was under contract provisions to destroy the tooling (under the watchful eye of Chevrolet representatives) once the production run was completed.