Greyhound therapy
"Greyhound therapy" is a pejorative term used in the US health care system since the mid-1960s to refer to mental health authorities' buying a ticket on a Greyhound Lines bus to get rid of possible "troublemaker" patients.
The practice is still in use in certain mental-health circles.
Diesel therapy or motorcoach therapy are similar terms for the practice and are usually used pejoratively.
