motorcar has definitions from the field of transportation
1
[ noun ] (transportation) 4-wheeled motor vehicle; usually propelled by an internal combustion engine

Examples

"he needs a car to get to work"

Used in print

(Robert E. Lane, The Liberties of Wit: Humanism, Critici...)

The limits are suggested by an imaginary experiment : contrast the perceptual skill of English_professors with that of their colleagues in discriminating among motor_cars , political candidates , or female beauty .

*