This info was observed on Wikipedia. Tucker sold Studebakers in the Detroit area at one point and represented many makes during his lifetime and later created his own. Very interesting and ambitious man.
"Tucker and his new wife, Vera (married in 1923 at age 20), then took over a 6-month lease on a gas station near Lincoln Park, running the station together. Vera would run the station during the day while Preston worked on the Ford Motor Company assembly line. After the lease ran out, Tucker quit Ford and returned to the police force again, but in his first winter back he was banned from driving police vehicles by the force after using a blowtorch to cut a hole in the dashboard of a cruiser to allow engine heat to warm the cabin. During the last couple of months at the gas station, Tucker began selling Studebaker cars on the side. He met an automobile salesman Michael Dulian, who hired Tucker as a car salesman at his Detroit dealership. Tucker did very well, but the dealership was a long drive from Tucker's Lincoln Park home, so Tucker quit and returned to the police force for the last time. A few months later, Dulian, still impressed with Tucker's immediate success as a salesman, invited Tucker to move south with him to Memphis, Tennessee, to work as sales manager. (Dulian would later become sales manager for the Tucker Car Corp.) Dulian was transferred a couple of years later; Tucker stayed in Memphis and was a salesman for Ivor Schmidt (Stutz) and John Fischer (Chrysler), where he became general sales manager. While managing Chrysler sales in Memphis, Tucker made a connection with Pierce-Arrow. In 1933, Tucker moved to Buffalo, New York, and became regional sales manager for Pierce-Arrow automobiles, but after only two years he moved back to Detroit and worked as a Dodge salesman for Cass Motors."
"Tucker and his new wife, Vera (married in 1923 at age 20), then took over a 6-month lease on a gas station near Lincoln Park, running the station together. Vera would run the station during the day while Preston worked on the Ford Motor Company assembly line. After the lease ran out, Tucker quit Ford and returned to the police force again, but in his first winter back he was banned from driving police vehicles by the force after using a blowtorch to cut a hole in the dashboard of a cruiser to allow engine heat to warm the cabin. During the last couple of months at the gas station, Tucker began selling Studebaker cars on the side. He met an automobile salesman Michael Dulian, who hired Tucker as a car salesman at his Detroit dealership. Tucker did very well, but the dealership was a long drive from Tucker's Lincoln Park home, so Tucker quit and returned to the police force for the last time. A few months later, Dulian, still impressed with Tucker's immediate success as a salesman, invited Tucker to move south with him to Memphis, Tennessee, to work as sales manager. (Dulian would later become sales manager for the Tucker Car Corp.) Dulian was transferred a couple of years later; Tucker stayed in Memphis and was a salesman for Ivor Schmidt (Stutz) and John Fischer (Chrysler), where he became general sales manager. While managing Chrysler sales in Memphis, Tucker made a connection with Pierce-Arrow. In 1933, Tucker moved to Buffalo, New York, and became regional sales manager for Pierce-Arrow automobiles, but after only two years he moved back to Detroit and worked as a Dodge salesman for Cass Motors."