During the period between December 26 2010 and January 31 2011, Hasbro ran their "Supercharge Your Holidays" promotion: for every $20 spent on Hasbro-branded product, customers could receive a free, random product from a list provided by Hasbro. Among the items on the list was "Transformers Activator & Speed Stars Mini Vehicle". According to this discussion thread on Allspark.com, Rally Rumble Optimus Prime (as the figure is listed in the thread) was one of the figures distributed.
Seibertron member, carytheone, has directed us to CarScoops.com, which has revealed that General Motors are to be auctioning off four of its Transformers Movie Camaros from Transformers: Revenge of the Fallen, Transformers: Dark of the Moon, Transformers: Age of Extinction and Transformers: The Last Knight. The car itself was as much of a star as the Transformers themselves and even the actors, so the interest is bound to be high. These are surely the auctions for “big bucks” Car - Read More
In addition, it is very difficult, if not impossible for the vehicle mode to tab together properly. The entire cab assembly breaks apart very easily as the tabs lack sufficient friction to keep it together, resulting in either a gap forming between the front windows and the hood or part of the hood raising up. The pipes that are supposed to connect to the bottom of the smokestacks also don't swing out far enough to properly do so if the feet are tabbed together completely. When attempting to complete the cab assembly, it is advised to apply upward pressure on the front side barrels while pushing the cab downwards. A misassembly error is also present on all versions of the mold, where the roof hinges that connect the sides of the cabin are reversed.
Generation 2 Optimus Prime comes with all his original accessories, as well as two major new play features. To increase his arsenal, he is armed with a pair of black missile launchers that fit in his fists and fire red spring-loaded missiles; these launchers were retooled from the G.I. Joe figure Barricade. Secondly, he comes with an electronic "sound and lights module" that can either plug into the front of the trailer (where it resembles the air conditioners used on refrigerated trailers), or hook onto Optimus's back in robot mode (via a new slot sculpted into the cab robot). Unfortunately, the soundbox is heavy enough that doing so can easily overpower Prime's hip joints, causing him to topple backward. The soundbox features a large, vacuum metalized Autobot symbol on its front, and three grey buttons which trigger two flashing red LEDs on either side of the module, and a trio of sound effects: a truck engine noise, a laser gun sound effect and a garbled voice that said "I am Optimus Prime!". The module also features ports on either side into which the missile launchers can peg.
In robot mode, like Combat Hero Prime, the bottom of the truck became his familiar windowed chest based upon the original Optimus Prime toy. His main gimmick was light up LED headlights, and a lightpipe in the bottom of his right fist, illuminated by an LED in his right forearm, that would illuminate his clear sword or his double-barreled rifle if they were used in that hand. All three LEDs were activated simultaneously by pressing the sunroof-like depression on the roof of the truck.