Caray was born Harry Christopher Carabina to an Italian father and Romanian mother in St. Louis. He was an infant when his father died. His mother remarried with a French-American, but after her death when Caray was eight, he went to live with his aunt Doxie at 1909 LaSalle Street in a tough, working-class section of St. Louis. As a young man, Caray played baseball at the semi-pro level for a short time before auditioning for a radio job at the age of 19.

Rumors that Caray was having an affair with Susan Busch, wife of August Busch III, the oldest son of Cardinals president Gussie Busch, then a company executive and later CEO of Cardinals' owner Anheuser-Busch, began to circulate after she was involved in a single-car accident near her home in the St. Louis suburb of Ladue late one night in May 1968. She told police she was returning from a visit to "a friend"; the cause of the accident was never disclosed publicly and no further action was taken. However, her marriage to the younger Busch was failing due to his extreme commitment to the family business. According to Anheuser-Busch historian William Knoedelseder, the two had been seen eating together at Tony's, a popular and well-regarded St. Louis restaurant (where Knoedelseder later worked, and heard the story from more senior staff). Waitstaff present said the two were both extremely inebriated and openly affectionate. They stood out not only because both were well-recognized around St. Louis but because Caray was 22 years older than she. The restaurant's owner had to tell the staff not to stare at the couple. It also was rumored that the near-fatal car accident Caray suffered later that year was actually intentional and related to the alleged affair. Private investigators working for Busch had found that telephone records showed Caray and Susan Busch had made many calls to each other. They supposedly confronted him about the reported affair while he was in Florida recuperating. Susan divorced her husband shortly afterwards. She has only spoken about the alleged affair once since then, denying it. While she and the broadcaster were friends, "we were not a romance item by any means", she told the St. Louis Post-Dispatch. Caray cited the rumors of the affair as the real reason the Cardinals declined to renew his contract after the disappointing 1969 season. Like Susan Busch, Caray, too denied that the affair had occurred when asked, but according to Knoedelseder was less consistent, sometimes suggesting it had indeed occurred, and usually saying how flattered he was at the idea that a woman as attractive as Susan Busch would see him the same way.

Using a quote from the above article, answer the following question: Can you tell me what led to the rumored affair with Susan Busch?
began to circulate after she was involved in a single-car accident near her home in the St. Louis suburb of Ladue late one night in May 1968.