One of the concept artists for Transformers toys, Ken Christensen, has revealed some concept art for some of the Movie BotShot toys... and saying that he did concept art for Dino/Mirage and Soundwave.

We finally got a Soundwave BotShot about a year later, based more on the Animated version, and a red Mirage was released in Japan... but it sounds like they would have had original Movie car versions.