Police arrested Joshua Milton Goldbaum, 27, at his home Saturday morning after connecting him to the fatal accident, the North County Times reports.
Goldbaum's passenger in the Sonata, a 21-year-old Vista woman, died at the scene.
"He left the woman in the back seat, who was deceased and apparently his friend," Bettencourt said. The deceased name was not available.
Another passenger in the Sonata was transported to Palomar Hospital with major injuries, that appeared to be non-life threatening.
Goldbaum is charged with felony hit-and-run, felony driving under the influence, being under the influence of a controlled substance and being a drug addict driving a motor vehicle.
Bettencourt said the last charge is rarely used.
"It's something someone could be charged with if they've had problems with substance abuse in the past," Bettencourt said.
The accident is still under investigation.