Inoder to resist air
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A car's stream-lined design helps to reduce the drag and friction of passing through the air. This reduces fuel consumption and is less wearing on the engine.
5 cars Or 9.
cars are manufactured by an assembly line
Some collective nouns for cars is a fleet of cars or a line of cars.
As I understand it all of the GM "A" body cars have the same roof line. That would be the Chevy Celebrity, the Pontiac 6000, the Buick Century and the Oldsmobile Cierra of the "A" body years 1982 to 1996?.
On an assembly line.
Toyota's High trim cars are Lexus line. Scion is their budget/entry level line.
cheaper cars
Common usage on Canadian National Rail for a line of railroad cars is a "cut of cars". The term most used in the US is a "consist" or a "string of cars". Once the loco ties up, it is, of course, a train.
Pontiac cars are no longer built anywhere, GM discontinued the line.
train
Henry Ford
cars