In order to keep the bricky appearance of the train engine intact, [Robert] hollowed out a few cheap imitation LEGO bricks to house the electronics. He also cut out slots for JST connectors ...

The Lego Duplo Interactive Adventure Train offers a hands-on building experience ... this one is the most detailed and realistic in the series.” Star Wars fans will love this new Lego release ...

A series of electromagnets on the Lego vehicle ride in that track ... This is used to push the train up to speed, as well as slow it down for braking.