Those were some of the questions posed by John Zimmer, president and co-founder of U.S. rideshare firm Lyft, at the recent Rakuten Optimism 2019 conference in Yokohama, Japan. Lyft became the first ridesharing company to go public earlier this year when it completed an IPO with a valuation of $24 billion. It has also been pursuing autonomous driving technology: in partnership with Aptiv, Lyft recently notched 50,000 rides in Las Vegas in just a year, and has recently launched Waymo autonomous vehicles on the Lyft platform in Phoenix, Arizona. Against that background, Zimmer spoke about the future of transport with Mickey Mikitani, CEO of early Lyft investor, Rakuten. "We have to think about what is the right infrastructure to support (the future of transport)," Zimmer said during his second appearance at Optimism since speaking at the inaugural conference last year in San Francisco.