Diesel therapy is slang for prison transportation in the United States in which prisoners are shackled and then transported for days or weeks; the term refers to the diesel fuel used in prisoner transport vehicles.[1]
It has been alleged that some inmates are deliberately sent to incorrect destinations as an exercise of diesel therapy.[2]Voluntary surrender at the prison where the inmate will serve his time is recommended as a way of avoiding diesel therapy.[3]
Diesel therapy is sometimes used on disruptive inmates, including gang members.[4]
Pedal to the metal… Hit the gas… Go Fast!
The need to drive very fast, aka: use a lot of diesel fuel.
Not every ambulance transport needs “diesel therapy”. Usually a smoother and easier ride works better.