I heard about this before I got into model cars, but decided to find one 3 years later. I must say I was lucky someone had connections, as this was only found at some hobby or motorsport event. It also doesn't help that Spark was commissioned by Vitasoy, as they weren't allowed to reveal just how many were produced. Not knowing this number makes it difficult to pinpoint its exact scarcity, but it's safe to say it's definitely pretty uncommon. It's possible there are about 300 produced.