The Transformers #154

With the Predacons and Constructicons on a rampage, the US government decides to send a message to all Transformers and publicly destroy their captive Throttlebots. However, Walter Barnett secretly removes the Throttlebots brain modules, and inserts them into six toy racing cars in the hope of saving them. At the request of Goldbug, Walter seeks out Buster Witwicky so that Buster can return them to the Ark, but when they arrive they find the main Ark gone and no Autobots to be found.