The man, whose identity wasn't released, was taken by CareFlight to Miami Valley Hospital in Dayton with a serious leg injury.
"He had extensive lower extremity injuries," Slanker said.
Two nurses who reside nearby in the 4700 block of Bosart rushed to help the injured rider.
"We applied pressure and talked to him and tried to reassure him," said Diane Myers, a retired nurse.
Myers, who lost her own son to a motorcycle crash, had seen the bike go past her window, but it didn't appear to be speeding.
"I heard a skidding and a crash, and I knew something happened," she said.
Slanker said the driver of the car, who was unhurt, was responsible.
"She definitely failed to yield," he said. "That's what caused the collision."
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