What do new cars have that reduce friction between the body of the car and the air?

New cars often feature aerodynamic designs that reduce friction between the vehicle's body and the air, enhancing fuel efficiency and performance. These designs include smooth, streamlined shapes and elements like spoilers and diffusers that help manage airflow. Additionally, manufacturers may use specialized coatings and materials that minimize drag, further optimizing aerodynamics. Overall, these innovations contribute to improved handling and reduced energy consumption.