non-smoking rental car; smoke-free car
Specifically a rental car designated as non-smoking. Often used in travel contexts.
I reserved a non-smoking car.
non-smoking train car; non-smoking carriage
A train car where smoking is prohibited. Common on shinkansen and limited express trains.
Which car is the non-smoking car on this train?
Compound of 禁煙 (no smoking) and 車 (car/vehicle).