WhiteBoard recently donated this vintage Tonka Fire Truck to the Tonka Toy Museum. We have done a lot of work for toy companies over the years (including Tonka Toys), so we certainly appreciate classic toy designs like this one.  We imagine the Form Follows Reality™ matrix for this product must have been something like:

• Must be Tonka tough
• Must be made from stamped steel in the factory overlooking Lake Minnetonka
• Must be dip painted with minimal decoration