Credit: Jonathan Newton/The Washington Post

Lenny B. Robinson — the Maryland man otherwise known to locals and hospitalized children as “Batman” — has died, Maryland state police confirmed to EW. The 51-year-old was struck when his custom-made Batmobile was hit by another car on Interstate 70 Sunday night.

Robinson, who the Washington Post reported was on his way back from a car show, pulled over in the fast lane because of engine trouble. According to police, his vehicle was struck by another car as he was outside inspecting the engine issue. Robinson was pronounced dead at the scene. The crash is currently under investigation, but no charges have been filed thus far. The other driver was uninjured in the crash.

A local businessman who spent his free time dressing up as the Dark Knight and visiting sick kids in Maryland and D.C. hospitals, Robinson’s superhero alter ego went viral in 2012, when a video emerged of police pulling him over in his car, in full costume. He became a sensation, garnering attention on CNN, news programs and even on The Tonight Show with Jimmy Fallon, but despite the apparent fame his mission never changed: he would always famously proclaim in interviews that he was “just doing it for the kids.”