My course has some severe elevation changes, and a few holes where the greens aren’t close to the next tees… if you play it smart walking, you can easily keep up with 2 guys in a cart… especially if those guys aren’t trying to move as fast as possible.
Honestly, I think the walking pace is about right for a course… you aren’t rushing every shot, have some time to think between each shot and get to see the course. If you are paying attention and move when you can, it’s easy to get around in 3 hours walking.