Toll booths emerge as latest driverless car battleground

Can a driverless car navigate a toll booth?

On the face of things, driverless cars are a pretty straightforward idea. After all, we've had drones without pilots flying thousands of miles away for years now. 

To be fair, the technology for cars to be able to operate without a driver has been around for a while now, but it's dealing with the vehicles interacting with the rest of the environment that's the real challenge.