Neighbors heard shots before 4 a.m. and saw the man slumped over his steering wheel as another car left the scene.
Police spokeswoman Renee Witt said the 27-year-old was shot multiple times. He did not live in the area.
Police are asking any possible witnesses to report anything they may have seen.
The shooting is the 24th homicide this year in Seattle, four more than last year.
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