Argos UK website now has listings for two peculiar items from this summer's Transformers Movie. They are two motorized children's vehicles, one a Bumblebee Tri-Bike, and the other an Optimus Prime (comically named "Opimantis Prime") Quad ATV bike.
See the listing for the Bumblebee Tri-Bike
by clicking here
See the listing for the Optimus Prime/Opimantis Prime Quad Bike
by clicking here