Helsinki has an audacious goal: By 2025, it plans to eliminate the need for any city resident to own a private car. The idea is to combine public and private transport providers so citizens can assemble the fastest or cheapest mode of travel. “The city’s role is to enable that market to emerge,” explains Sonja Heikkilä, a transportation engineer with the Helsinki government. Bus routes would be dynamic, changing based on demand at any given moment. From planning to payment, every element of the system would be accessible through mobile devices. Citizens could use their phones to arrange a rideshare, an on-demand bus, an automated car, special transport for children, or traditional public transit. They could purchase “mobility packages” from private operators that would give them a host of options depending on weather, time of day, and demand.