We need to create a new highway system for driverless cars/vans/trucks/etc. The current road infrastructure with its potholes, tolls, traffic congestion is not ideal. They need to conceive something similar to HOV lanes in order for this to move forward.
Taken to the extreme, a separate network for platooned long haul transport could even be electrified, combining 90% of the relative advantage of railroad over conventional road with more than 100% of the benefits of conventional road over railroad.
