First, many auto makers chose to include LED lights from the beginning as a choice to join their cars. For example, headlights and taillights can now use LED lights instead of traditional halogen lamps used in the past. Leds can not only replace the main light that generates the most light in front of the vehicle, but also add extra small LED lights to the lamp for higher brightness and even color.
Leds can also be used to make vehicles more attractive. You've probably seen car racing movies like fast and furious before. In those films, many cars were deceived by the light in the car. Almost all of these lights are LED based. Car makers use leds because of their strong brightness, which can be used in small packages. Thus, they can easily connect to the bottom of the vehicle. They can also take whatever color you want. So if you want your car to have a hot blue light underneath it, you can have it. Leds are very flexible for this application, and you can choose to install lights that actually change colors and can be programmed. If you want to change the color, you can.
This is not just a car lamp, you can use leds. If you like, you can put a small LED light in front of the car, in front, behind, or even in the car.