What does three cars without cars stand for?

Because the carriage and carriage belong to the three no-cars, and the three no-cars represent horses.

The Zodiac, also known as the Zodiac, is twelve kinds of animals in China that match the twelve earthly branches according to the year of birth, including rats, cows, tigers, rabbits, dragons, snakes, horses, sheep, monkeys, chickens, dogs and pigs.