LEGO and Nintendo added the first Mario Kart sets to the Super Mario lineup in January, and followed that up with the LEGO ...

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 ...

Both LEGO and Mario have an incredible legacy ... as a leak of an upcoming Spiny Blue Shell set is making its way around internet forums, along with a picture of the possible design.