When LEGO came out with these massive tires a few years back vehicle builders rejoiced, but sometimes you need something more for building large tractors, monster trucks, post-apocalyptic mono-wheels, or other things needing outrageous tires. A builder who goes by the name of Sariel found some amazing non-LEGO tires that fit LEGO hubs perfectly, and used them on this legendary Caterpillar 797F Dump Truck. The real thing is 25 feet (7.7m) high to the canopy, 49 ft 6 in (15.1 m) long and weighs in at a staggering 624 tons when empty. This model is considerably smaller but no less impressive and, as LEGO vehicles go, it is a force to be reckoned with.

With its rugged stance and attention to detail, I would have been impressed enough if this were a stagnant model. However, as this image illustrates, it is jam-packed with Power Functions and a robotic Mindstorms EV3 unit to give it that extra push of awesomeness. I can see myself playing with this big Cat for hours all the while making truck noises like a six-year-old. It doesn’t take much for me to revert back to a six-year-old but, given this post’s title, you would have guessed that already.

In fact, you can even see it in action in Sariel’s video!

[Update: an earlier version of this article mistakenly identified the tires as LEGO elements. We regret this error.]