The Optimus Prime set from the KRE-O line, which made a smashing debut at BotCon 2011 to the general public, is in the process of hitting doorsteps as this is being read, has already been reviewed.
The video reviewer seems genuinely impressed by the set, so take a look at the review of the vehicle, robot, and KREONS in the video below.
And for those that are asking, let this be the definitive answer: No, it does not transform from vehicle to robot and vice versa. These are building sets.
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