O'Carroll
O'verrated
^^^^THIS^^^^Where cart golf slows down is what others have mentioned: when the 2 people in a cart feel like they can't function independently at all, aka the cart has to be drive to within 2 yards of each player's ball at all times and one player is "wasting" time waiting on the other player to hit. I have this issue almost every time I play golf with my dad, who rides in a cart all the time, he doesn't understand that I can just get out of the cart with a few clubs and go hit my approach shot while he takes the cart to his ball. It's the same reason why I can go out as a walker on the muni that I normally play and usually keep up with 2-3 guys that are riding in carts because they don't really know what to do in the carts.
^^^^AND SO MUCH THIS^^^^Don't forget about the people who park the cart on the wrong side of the green and have to go back to get it after they are done with the hole.
I really think the casual golfer has NO CLUE how to get around the golf course on a cart. Park the cart 40 yards short of the green, hit your chip, walk up, three-jack, walk 40 yards back to the cart...yeah that's a good idea.
I think there should be a study done regarding how fast you can actually get around 18 holes riding in a cart if you do it right.