Here in North America, the F-150 pickup and its Super Duty siblings are Ford's (F 0.29%) bread and butter -- and they've been posting big sales gains lately, thanks to surges in the construction and oil markets. Now, a related segment -- commercial vans -- is showing signs of heating up, and Ford's small Transit Connect is posting big gains as well.

But sales of Ford's mainstay E-Series van have actually dropped lately. In this video, Fool.com contributor John Rosevear looks at the important commercial van market -- and at Ford's surprising plan to replace its familiar old Econoline with a very different product.