Leonard B. Robinson, better known in crimefighting circles as the “Lamborghini Batman” or the “Route 29 Batman” died in a car crash on I-70 on Sunday. Robinson, 51, was known for visiting hospitalized children in a Batman suit, with his black Lamborghini Gallardo playing the role of the Batmobile.

The Associated Press reports that Robinson’s vehicle was struck around 10:30 p.m. by a Toyota Camry as it sat partly positioned in the fast lane of I-70 because of engine trouble. Robinson was checking on the engine at the time and was reportedly struck by his own car. The crash took place in the eastbound direction of I-70 just outside the unincorporated community of Big Pool, Md. The driver of the Toyota Camry that struck Robinson’s car was not injured, and Maryland State Police are investigating the crash.

Robinson gained fame after a viral video and photos of him being pulled over by the Maryland police while wearing a Batman suit surfaced on the Internet. The traffic stop itself, which occurred three years ago, was for an absent license plate, but photos of Batman being pulled over attracted the attention of Internet users after the Montgomery County police posted a photo of Robinson and his Lamborghini on their Twitter account.

It soon emerged that Robinson was a local resident who visited children in hospitals to cheer them up with Batman toys. Robinson’s own son was also known to join him in the Lamborghini dressed as Robin.

“He touched a lot of lives and made a lot of kids smile,” his younger brother Scott Robinson told the Washington Post. “That’s all he wanted to do.”

Robinson reportedly worked closely with the D.C.-based charity organization Hope for Henry Foundation, which threw superhero-themed parties at children’s hospitals in the area.