Emergency services sealed off part of Prestwood Road on Saturday afternoon, with the air ambulance also filmed departing from the green near Newcross Care Home.
West Midlands Police's serious collision investigation unit tweeted to say there had been serious collision.
Eyewitness Marcus Burrows said he saw two air ambulances.
"Doctors and police came from all over the place," he said.
On Sunday police confirmed the crash had been between an e-scooter and car, leaving the scooter's rider and passenger seriously injured.
The man riding the scooter was still fighting for his life after surgery.
Prestwood Road was closed for most of Sunday afternoon. West Midlands Police's serious collision investigation unit tweeted shortly after 9.30pm to say the road had been reopened.