I worked in the ad industry for ages. It's a big no no to start one line of reasoning behind a product and then change, without major red flag caveats all over the place. The ad industry is regulated by the Federal Trade Commision , in DC. They initiate law suits as do watch dog consumer protection organizations. General Motors has been sued by these organizations countless times and lost big time. No way they'd take the chance for their Isuzu Division.
But again, nobody launches a new model behind a hand assembled experimental concept. It's just not done, these days. Isuzu wanted to go racing and needed 5000 copies to warrant a production car class position on the grid.