1988 - The final stretches of interstate highway from the original Eisenhower plan near completion. In 1991, the last traffic light is removed from I-90 to essentially complete the interstate highway system. Tolls become less frequent and are essentially totally removed from many stretches of highway.
2008 - As traffic increases in major cities, HOV lanes and road expansion continues. Highways in New York and other locations are privatized (example - the New York State Thruway.) New highways become part of the interstate system and are being built through the Mid-South.
2028 - As more and more cars hit the road, we will see new smart highways built along existing interstates. These highways will emulate what you see along many bridges, and parts of highways in Boston and DC; lanes that change direction depending on time of day and traffic patterns. More roads will resemble the "carrier/distributor" format seen outside of Walt Disney World. I'd also like to see more traffic lights on on-ramps to highways like in the San Francisco area to cut down ongoing traffic.
As traffic grows, roads will need to meet the new capacity, but drivers will need to adapt to new traffic patterns