How a 3D-printed, self-driving bus is bringing a level of humanity to the automated experience

The race to build a viable self-driving car is getting a little congested. In a matter of months, the concept went from being a futuristic dream driven mainly by Alphabet Inc.'s Google to an ultra-competitive field populated by traditional automakers and tech companies alike. Ford Motor Co. says it will mass-produce an autonomous vehicle without a steering wheel or pedals by 2021. Uber Technologies Inc. plans to have passengers riding in self-driving cars on the streets of Pittsburgh within weeks. Auto supplier Delphi Automotive PLC is teaming up with Israeli software maker Mobileye to build a self-driving platform that will be sold to automakers by 2019.