A new concrete road in Italy has a central guiding section so the driver doesn't have to steer.
Titles read: "MODERN TRANSPORT - Demonstration of New Concrete Road".
Various shots of a truck pulling numerous trailers as it moves along a new concrete road that has a raised section along the middle of it. Small horizontal wheels underneath the truck guide it along the raised section so the driver doesn't have to steer. When they come to a junction, the central section stops and the driver can choose which way to go before picking up the guiding block again.