I got an old style mixer truck with a heavy coatings repaint. I am so surprised to find that the mixer tank can roll with wheels running. Because worm shaft on the second axle connect a gear which is integrated with mixer tank.

The old Matchbox is so smart.

http://img403.imageshack.us/img403/2965/94258559.jpg
http://img403.imageshack.us/img403/399/47471311.jpg
http://img403.imageshack.us/img403/7822/52356481.jpg

Mmmmm, chocolate....my favorite!

hehe, when I have space time, I want to clear all its repaint and spray-paint again. :p

Its funny what kids will do! LOL ( I painted many a MB in my youth! mostly in police black & white.)

That's an ass-load of paint on there, looks like it was painted red and white as well as brown.
I like the worm gear though, it looks like a big hunk of cast iron.

man that thing is painted