When this 6-year-old boy asked for a Transformers birthday cake, his parents were up for the baking challenge.

Not only is the cake shaped like a super cool truck, but it actually transforms. And the birthday boy’s reaction is pure joy.

If you’re curious about this contraption’s mechanics, you can watch it in action — sans cake — here.

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Original article:

Animatronic ‘Transformers’ cake is coolest birthday surprise ever