https://www.reuters.com/article/us-waymo-selfdriving/waymo-picks-detroit-factory-for-self-driving-fleet-to-be-operational-by-mid-2019-idUSKCN1RZ1IZ >Alphabet Inc's Waymo said on Tuesday it had chosen a factory in Detroit to mass produce self-driving cars, looking to the historical heart of the auto industry to build the vehicles of the future.