Can a person with cancer have cancer spread more quickly by a three hour plane trip for a business trip? any clinical evidence?

Same speed, velocity: Because cancer is in the person, the cancer goes from one location to another at the same velocity that the person goes. Thus, if a plane is going east at 400 miles per hour, both the person and his cancer are going east at 400 miles per hour. When a plane lands, both the person and his cancer stop traveling, and the cancer just continues to spread in the person at the same rate as before travel.