Given the following context:

Sherman McCoy is a Wall Street bond trader who makes millions while enjoying the good life and the sexual favors of Maria Ruskin, a Southern belle gold digger. Sherman and Maria are driving back to Maria's apartment from JFK Airport when they take a wrong turn on the expressway and find themselves in the "war-zone" of the South Bronx. They are approached by two black youths after Sherman gets out of the car to move a tire out of the road. Sherman jumps back into the car and Maria guns the engine in reverse, running over one of the teenagers. The two drive away. Sherman initially wants to report the incident to the police, but Maria immediately talks him out of it, fearing that their affair would be publicly exposed.
Meanwhile, alcoholic journalist Peter Fallow, anxious for a story to make good with his editor, comes upon the hit-and-run case as a rallying point for the black community calling upon Jewish district attorney Abe Weiss, who is the Bronx District Attorney seeking re-election. According to Judge Leonard White, almost all of DA Weiss' prosecutions end up with black and Puerto Rican defendants going to prison and Weiss is seeking a white defendant for purposes of convincing the minority-majority community that he is worth re-electing. Weiss recognizes the press coverage inherent in prosecuting the callow Sherman, who has been discovered as the owner of the car, and therefore presumed to be the hit-and-run driver, in order to cultivate the image as an avenger for the minorities and be propelled to the mayorship of New York City. As Sherman is brought to his knees, New York City fragments into different factions who use the case to suit their own cynical purposes.

answer the following question:

How many people does Ms. Ruskin's car hit? 

one