In the United States, with regard to automobiles, a glider is a vehicle without a powertrain (especially without an engine).
All glider kits include a frame, front axle, and body (cab).
[citation needed] An exception to this is the state of Georgia where, when issued, for a tractor cab restored with a glider kit will always be branded "Rebuilt".
A "pre-emissions" engine which does not meet current EPA emissions standards for a new tractor trailer may be installed.
This change by the EPA was widely condemned by environmental groups[3] and was withdrawn by Scott Pruitt's interim replacement facing the prospect of a likely loss in court.