Lenny Robinson, the Maryland man who sold his cleaning business and invested thousands in becoming a real-life Batman so he could cheer up terminally ill children in hospitals, was killed in a car accident late Sunday night.

Robinson was returning from a West Virginia car show, where he was showing off his Lamborghini Batmobile, when he apparently stopped “partially in the fast lane” due to engine trouble. He was hit by a driver in a Camry and fatally injured. The driver of the other car wasn’t seriously hurt.

Batman was the president of Superheroes for Kids, Inc., a Justice League of similarly-minded individuals who helped set up costumed visits for sick children.

By the time he reached internet fame—due to a 2012 viral video of cops pulling over his Batmobile—he had reportedly spent more than $25,000 of his personal fortune on the toys and bat-memorabilia he gave away to kids.

The Washington Post reports that’s what he was doing just before the fatal crash:

Robinson had just stopped at a gas station, where he met a family whose children were interested in his custom-made car, Maryland state police in Hagerstown said. Robinson gave the kids some superhero paraphernalia before leaving about the same time as his new acquaintances. When they saw him pull over, they did the same and witnessed the 10:30 p.m. accident, state police said.

If you can handle a good cry, here’s a video produced by the Washington, D.C. childhood cancer nonprofit Hope for Henry, showing Robinson doing what he did best—rolling up in the Batmobile and cheering up a shy kid with leukemia.