Why does a red car look red?

A red car looks red because the paint on the car absorbs all colors of light except red. Red light is reflected back to our eyes, which is why we see the car as red.

The same principle applies to all other colors of cars. For example, a blue car looks blue because the paint on the car absorbs all colors of light except blue. Blue light is reflected back to our eyes, which is why we see the car as blue.

The color of a car is not determined by the color of the light that hits it. Instead, it is determined by the color of the light that is reflected back to our eyes.