So now I hear you asking yourself (while others may already know), "WHAT IS A PETERBILT MIGHTY MITE?"
Seems back around 1946 PIE (PACIFIC INTERMOUNTAIN EXPRESS) came up with an idea to highlight PETERBILT as this was their dominant truck at the time, and at the same time promote PIE throughout the trucking industry. So, in 1947 PIE constructed a 1/2 scale operational truck in their SALT LAKE CITY shop that was to become the first MIGHTY MITE.
Here is a picture of that truck beside the real truck it was patterned after, a model 344. It made its' first appearance August 2, 1947 at the opening of PIE's Denver Terminal.
At some latter point PIE again made further modifications to the old 47 (now an early 50's BUBBLENOSE 350) by lengthening the cab with a sleeper and removing the dromedary unit to come up with this configuration shown here beside a full size PIE truck for comparison --
By 1965, PIE was once again in need of a replacement for the Bubblenose PETE. Again Peterbilt made a model 282 COE in 1/2 scale to fit the bill, shown here beside a KENWORTH COE.
Of course, it would be very sad indeed if these "one of a kind" trucks did not survive. Where are they now?
For that information, and more pictures, you'll have to visit HANK'S, specifically the MIGHTY MITE thread
to see how some wonderful people have provided the answers.