The crash occurred during lunchtime here with hundreds of thousands of people on the street.
The group is in town for the Broadway League's Spring Road Conference.
One witness said the auto caught fire after the crash and another said: "I would have to imagine the vehicle was travelling at easily more than 30 miles per hour". Nobody in the group was harmed, he added. Elsman graduated from high school in 2016, her former principal said.
Thursday was the hottest day of the year so far, with temperatures reaching a record of 91 degrees.
The driver went for for 3½ blocks, coming to a stop near 45th Street and 7th Avenue. Three other people suffered injuries considered serious, and 15 others "less serious" injuries, he said.
Fire and emergency crews surrounded the chaotic crash site at the busy intersection of 42nd Street and 7th Avenue, where the auto could be seen partially lifted off the ground.
A person is loaded into an ambulance at 7th Avenue and 42nd Street in NY on May 18, 2017.
Rojas accused the person of stealing his ID before he put a knife to the victim's throat, police said, reports the paper.
"I saw a red vehicle driving, the man said, "and he started plowing people over". "People were trying to jump out of the way".More news: Gap Profit Jumps Up By 12.6 Percent
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At least one person was killed and 22 others wounded after a auto drove through a crowd of pedestrians in Times Square just before noon Thursday. Lowe saw injured people, including a woman who "had tracks all over her body".
He said he saw about five people who looked gravely injured - "people, really bad, in front of us".
Initial reports of the incident revived memories of July previous year when a man driving a truck killed at least 84 people, 10 of them children, and injured 202 in the French city of Nice. Rojas was taken into custody at the scene and the injured were taken to area hospitals.
One senior official said the suspect was being tested for possible of drug or alcohol intoxication. Shoes were scattered at the scene and one person was covered by a bloodstained blanket, the Reuters witness said.
More than 80 people died when a large truck plowed through a Bastille Day crowd in Nice, France a year ago.
On March 22, five people were killed in London and about 40 injured after a vehicle hit pedestrians and a suspected Islamist-inspired attacker stabbed a policeman near Britain's parliament. "And it hit a couple of other people". "I didn't know what was going on".
The car's bumper sat nearby in the middle of the sidewalk.
After the vehicle crashed to a halt, Long said, at least six people were scattered on the street.
"The vehicle sped through here, it was moving so fast, and it crushed all these people", he said.