system
Given the following post, respond as if you're commenting on Reddit:
human
Why do we design vehicles to be aerodynamic (laminar?) while dimpled golf balls are designed to create turbulence to get them to travel farther?

Wouldn't inducing turbulent flow on a vehicle reduce drag and increase fuel efficiency?
gpt
The dimples on golf balls were added after golfers noticed that the smooth balls they used went farther after getting cuts and scrapes in them. The uneven surface creates eddies around the ball that act as a cushioning against the air around it while flying.

If you want to get deeper into the aerodynamics, there are two types of flow around an object: laminar and turbulent. Laminar flow has less drag, but it is also prone to a phenomenon called "separation." Once separation of a laminar boundary layer occurs, drag rises dramatically because of eddies that form in the gap. Turbulent flow has more drag initially but also better adhesion, and therefore is less prone to separation. Therefore, if the shape of an object is such that separation occurs easily, it is better to turbulate the boundary layer (at the slight cost of increased drag) in order to increase adhesion and reduce eddies (which means a significant reduction in drag). Dimples on golf balls turbulate the boundary layer. 

**TL;DR:**
Vehicles are designed with laminar in mind because laminar flow has less drag overall, while golf balls have dimples that act as a symmetrical turbulent creator that has less drag initially.