This meaning refers to road vehicles with engines, usually designed for a small number of passengers.
Many cars were parked outside.
Electric cars are becoming more common.
This meaning refers to separate units of a railway train used for passengers or goods.
The train has twelve passenger cars.
The cargo was loaded into freight cars.
This meaning refers to automobiles grouped by a particular design, use, age, or performance type.
The race cars reached incredible speeds.
The museum displays several classic cars.