The next step after intermodal is for businesses to start getting rail sidings installed like in Days of Yore. We'll see how long that takes.
Many businesses still have these.  I worked in a factory for two years in my first few years of college and there was a section of the plant where we stored rail cars still on the tracks.  We used the rail cars for storage ironically.  I don't think it would take much to reactivate these hook ups throughout the country.  I'm sure I'll see companies going back to this in my lifetime.