MELROSE (CBS) – Kitty Sylvain has lived at the intersection of Main and Franklin Streets in Melrose for forty years. She knows it can be a dangerous place. But even by her standards, this Sunday morning was unusual.

“I dared to walk half way up there, and there were people, pedestrians trying to help him out,” Sylvain said. ” But I thought he was dead.”

Around 8:15 a.m., a man on a motorcycle had been knocked down by a guy driving a sedan.

According to police, after the sedan’s driver hit the bike, he drove back over it.

And then, he drove over it again and again — several times, according to witnesses.

Finally, police say the driver, 76-year-old Eugene LeDonne of Stoneham, got out of his car, looked around the scene, and then got back in, only to hit the gas and take off backwards, against traffic, down Main Street.

“I think he was an idiot,” Sylvain says of the sedan driver. “Why would anybody leave someone on the ground to die? Why would you try to run him over twice, not once but twice. If it was just an accident, why would you do it twice, or more?”

Witnesses helped police identify the driver almost immediately.

LeDonne will be arraigned on Tuesday morning on charges of leaving the scene of an accident and assault with a dangerous weapon.