San Francisco

Mobility startup ‘Bolt Mobility’, co-founded by eight-time Olympic gold medalist Usain Bolt has abruptly disappeared from several of its markets in the US, leaving e-bikes and equipment abandoned amid unanswered calls.

Bolt had raised $40.2 million, along with an undisclosed investment from Chennai-based Ram Charan Company in May this year.

According to reports ‘Bolt Mobility’ stopped operating in at least five US cities, including Portland, Oregon, Burlington, South Burlington and Winooski in Vermont and Richmond, California.

Portland suspended Bolt's permit to operate there last month after the company failed to provide the city with updated insurance and pay some outstanding fees.

Bolt had a presence in more than 50 markets across the US.

The investment from Ram Charan Company in May was set to be used to propel transportation sustainability efforts by bringing cutting-edge solid state battery technology; energy-efficient, metal-like plastics made from recycled waste.

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Bolt's social media has now gone silent, and hasn't posted on Instagram since June 11 or on Twitter since June 2.