It happened around 8:30 a.m. Monday at West 145th Street and Malcom X Boulevard in Harlem, where police say the man lost control of his 2015 Toyota Camry, jumped the curb and struck the two pedestrians.
The car also smashed through a corner flower shop, decimating it, and struck several parked cars.
The vehicle came to rest after traveling down the sidewalk for about half a block, but not before striking the victims.
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Surveillance video shows them walking hand-in-hand just before the car plowed into them from behind at high speed.
When EMS arrived, all three were found unconscious.
The 38-year-old woman and boy were taken to Harlem Hospital in serious condition.
The driver was was also taken to Harlem Hospital in serious but stable condition.
Yvonne Allen heard the impact and came running.
"I was coming down this way and heard, 'boom-bam, boom-bam,'" she said. "I'm like, what's going on? I heard this other lady screaming, 'The baby, the baby.'' I was like, 'Oh my God, what's going on?' Then I went over there and looked and I saw and I said, "Oh my God, I know them."
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There were no skid marks, indicating the driver never slammed on the brakes.
Neighbors are both stunned and heartbroken.
"How do you put it into words?" neighbor Yolanda Williams said. "It's not good. This is a very tragic, tragic situation."
Police say there is no criminality involved at this time.
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