the dude/hero who essentially apprehended the BMW X3 driver (7th/Howard homicide) gives his account here:
the driver is Farrukh Mushtaq, another local, age 32. OP thought possibly drunk.
I saw a man flee a car with airbags opened and signs of a fresh accident, as the car hit into another car. Called 911 and tried to get the attention of other driving passerbys that paused but kept going. As the guy tried to blend in with others on the street, I chased him down with another pedestrian and demanded he sit and wait for the police, he obliged. Definitely not sober. F'ing guy killed someone due to his recklessness. Witnesses said he blew through a red light when he struck the girl. His car told the same story.
Kate was 26, Heather was 41. so, so sad.
I don't have much faith in George Gascon lifting a finger, as usual. "It was an accident, after all." "Insufficient evidence." That kind of thing.