> The future for self driving cars are closed roads where only driverless cars are allowed. Given that human-driven cars, trucks, cyclists are already on the r

> The future for self driving cars are closed roads where only driverless cars are allowed. Given that human-driven cars, trucks, cyclists are already on the roads and will be for quite a while to come, and pedestrians already cross it, you would have to build a whole new road network, with crossing points for human-driven vehicles/pedestrian traffic. Which is simply infeasible, both in terms of money, but also simply space, especially in built-up areas where the space is already fully utilised.