How in the world can a caterpillar in the back get on top of another caterpillar if they’re all moving the same speed? If Henry runs all the way to the front and plops down in front of Bob, then Bob has to look at Henry’s caterbutt the rest of the trip cuz nobody is moving faster than Henry. That it to say, Henry’s just as fast as anyone else.
The only way to get on top of the pack is to temporarily move faster than them. Then when you end up at the back again, you have to slow down and let your mates climb over you.
I don’t see any speed improvement here.