The "Post-Interstate Era"

Today in defensive driving class, the instructor droned on about proper behaviors and reasons behind speed restrictions in work zones. Suddenly, in a rare moment of canned clarity, he announced, "In the post-interstate era, road work is likely to become a more commonplace phenomenon. As motorists, we must all be sensitive to frequent and distributed efforts to keep our nation's roads in good repair."

I found the observation quite interesting and wondered where he read it (why his syntax and diction had suddenly improved so drammatically!), but I thought it might come across as obnoxious to ask...so I didn't.