I think that photo is at the Ford Airport, and that truck is to transport baggage to the Dearborn Inn. There is a similar picture somewhere of an aluminum bodied truck.
Is that Henry carrying the bag of money? :-)
This is a Stout Metal Airplane model just before the Tri Motor. The sign on the side of the plane sez,"Stout Transportation" Stout was briefly into the transportation business when Henry took an interest and the rest is history.