CAT D7R vs. 856
My CAT D7R is history now. Built in 2006/2007 originally it was controlled by one of the first LEGO RC kits while PF didn't exist yet. After the LEGO PF dozer was introduced I got my copy and used the PF stuff for my CAT dozer.
After 10 years that model became quite aged (e.g. many studs visible, old techniques etc.) so it was time to tear it down.
But for the occasion I pictured it together with the very first LEGO Technic dozer from 1979 (set 856). Spot the difference in size!