today in the morning, the Chaffee was supposed to be removed from the garage, as the racing event ended. It was not (even though the missions allowing you to make money on it did in fact end), just checked – it’s still in my garage. You cannot use it either, it just throws an error.
The reason why that happen I suspect was the fail on RU server from today, where the crew was not retrained to regular Chaffee (as initially promised). I also suspect they have to fix this before the tank gets actually removed. According to RU forums, the RU server crews will be fixed later on, so I guess they are trying to avoid this situation.