Melbourne entrepreneur and marketer Steve Sammartino and his Romanian buddy Raul Oaida, who happens to be a ‘technology genius,’ are truly insane.

The adult children teamed up to not only create a full sized Lego car made up of over half a million pieces, but they even made sure the car was completely functional.

Better yet, the engine–which has four orbital engines and a total of 256 pistons–runs on pure air pressure.