system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How can Tesla's new truck have a lower drag coefficient than a Bugatti Chiron when the surface area is so much larger?
gpt
There is a difference between "drag" and "drag coefficient". The equations to calculate the drag coefficient account for the surface area.

If you have two spheres, where one is 1 inch in diameter and one is 1 foot in diameter, they will both have the same drag coefficient, but the bigger sphere will have more drag.