In the weeks after the incident, Kobel battled memory issues, often forgetting words and having difficulty speaking clearly as a result of his brain injury.

CEO Bryan Kobel, 45, claimed that he tried to cancel his Uber ride with Vadim Uliumdzhiev after the driver said he couldn't have his support dog in the car

A Russian Uber driver working illegally in the US was caught on camera headbutting a South Carolina CEO as he held his service dog, leaving him with a brain injury, according to the victim and a new lawsuit.

911 callers report illegal immigrant Uber assault Three 911 callers frantically sought help after victim Bryan Kobel was allegedly assaulted in Charleston, South Carolina. (Credit: The Law Offices of Kenneth Berger)