But that's interesting because the only time that the product shouldn't be under temperature is during load and unload time which is totally unrelated to travel time or distance.

Now the cost of the ice cream could be an issue since keeping it frozen during transportation is not free.

My only guess is that when the supply trucks switch their cargo to smaller city worthy delivery trucks the ice cream sits on the asphalt. Whole Foods has it's own semi loading dock, so they don't have to switch the cargo out.