The Alameda County coroner's office identified Joaquin Parra as the man who was killed in Pleasanton Friday morning after his car ran off the road, hit a tree at a high speed and then overturned.
The 27-year-old Dublin resident was apparently not wearing a seat belt and was ejected from his black Mercedes 190E after it veered off the road on Stoneridge Drive, just east of Springdale Avenue, according to police.
"It appears he failed to negotiate a curve in the roadway and went straight into the tree, which was about three feet in diameter," Lt. Craig Eicher said, adding that the car was totaled.
Eicher said the incident may have been related to a hit-and-run that was reported in the parking lot of Aura, a nightclub on Hopyard Road and Stoneridge Drive. The crash site is about a mile west of the nightclub.
Police suspect that alcohol may have played a role. However the department is awaiting toxicology reports from the coroner's office.