Uber is hiring engineers to develop electric scooters and bicycles which can drive themselves around cities in order to reach customers and charging points.

Electric scooter and bicycle-sharing services, including Uber’s Jump business as well as competitors Bird and Lime, allow customers to collect the vehicles and then leave them on the pavement outside their destination.

The businesses then pay contractors to collect, charge and repair the scooters and bicycles overnight when they’re not in use. It’s a costly logistical operation which significantly reduces profits for the operators.

Uber announced on Saturday that it had begun hiring a “micromobility robotics” team to develop scooters and bicycles which could drive themselves to charging points, potentially removing the need for costly contractors paid to collect them.

The business hasn’t published any further information on the project, but said in an online hiring page that it plans to “improve safety, rider experience, and operational efficiency of our shared electric scooters and bicycles through the application of sensing and robotics technologies.”

Uber’s self-driving car division was temporarily shut down last year following a fatal crash. Police in Arizona said that the safety operator who was overseeing the trip was distracted and streaming a television show on her phone before the crash. In December, Uber received permission to resume testing the self-driving cars.