The "Optimus Prime Convoy" iPod stereo dock has only just begun to ship in Japan for the not-so-cheap price of $150, according to SlashGear. For that kind of money, though, we thought it only fair that the entire system transform; apparently only the truck cab becomes robotized. We're no Transformer experts (thank goodness), but that seems to be cheating a bit. Maybe it's an insurance issue.
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