Far from master crowie... I just plagiarise, but enjoy giving them out for free... I get a similar small feeling like you do with your trucks.
I also get a kick out of playing around in SketchUp... I miss my programming days.

You're getting warm there Splinter... but, I slip in a dodgy piece (from a different puzzle) and then purloin their money box to head down to the "box store"... the contents of a cellar are way too classy for me... and my liver would be confused.

If your first cut is too short... Take the second cut from the longer end... LBD