This is Dennis Bosman’s ‘Mystery Box’, and – unlike your Mom – he hasn’t published a single picture of what’s inside it on the internet. Evidence from Area 51? Kim Jong Un’s nukes? A copy of the final season of Game of Thrones? Whatever’s in there Dennis’s box is chained to an enormous ten axle Broshuis trailer pulled by a MAN TGX of unbelievable detail.

The MAN truck wears the livery of ‘Van der Vlist’ courtesy of superb custom decals, and rides – like the trailer – on non-Lego metal wheels. Underneath the spectacularly detailed tilting cab is a working 6-cylinder piston engine and a full remote control drivetrain, operable via bluetooth thanks to a third-party SBrick.

The axles of the huge Broshuis trailer steer too, with four Servo Motors providing the power, with each axle’s wheels turning at a different ratio. It’s a magnificent build – possibly one of the finest of the year – and there’s much more to see at Dennis’ MAN TGX Flickr album here, plus you can read our interview with Dennis as part of the Master MOCers series by clicking here.