Self-driving car tech is one of the big themes of this year's CES expo in Las Vegas. South Korea's Hyundai is one of those showing off a prototype. But when the BBC's Dave Lee put it to the test, it had to deal with other drivers making illegal manoeuvres.

Google parent Alphabet Inc. and Fiat Chrysler Automobiles NV agreed to incorporate Alphabet's self-driving technology into 100 Chrysler minivans, significantly expanding the tech giant's test fleet of driverless vehicles and marking its first partnership with a major auto maker. Alphabet and Fiat Chrysler engineers will collaborate in Michigan to redesign the 2017 Pacifica Hybrid minivan to integrate Alphabet's computers, sensors and software, the companies said. The minivans, like Alphabet's other self-driving cars, will be solely for testing. Alphabet aims to have the first driverless minivans on the road by year's end but declined to provide a timeline for all 100 vehicles. By expanding the test fleet, the agreement will help Alphabet's quest to automate the world's vehicles.