They are a very efficient tour group. They run 3 groups, everyone uses radios, and there is a leader, middle man, and clean up driver for each group. And they do provide maps. They also place people within the group based on their past driving, slower towards the front. And do not allow passing within the group. They use the radios to relay info to the drivers behind about road hazards, traffic, and corner speeds. When you hear a report, you repeat it for the cars behind. Great job for a passenger! Each of the three groups the leader goes at a different pace. The first group drives very fast. The second group the leader goes the speed limit. and the 3rd the leader going well UNDER the speed limit and staying in contact with the clean up driver so the last cars in the group do not have to speed to keep up. Each group ends up going the pace of the slowest driver in the group.
I just hate when someone gets in a tour group that just refuses to go over the speed limit and causes a huge gap in the group lagging behind. Even if the leader goes the speed limit, because of stop signes, whiplash effect, the farther back in the group the faster you have to go to catch up. I also hate the fast drivers pass everyone and get right behind the leader, then complain the group doesn't go fast enough. You tell them and tell them, but it just doesn't seem to sink in. The fastest drivers are right behind the leader going the speed limit and the slower drivers are lagging miles behind the group. This 928 group does a great job of preventing this.
On a local PCA tour I did clean up and traveled well over 140 to pick up stragglers and catch back up with the group. It was kinda funny... I blew passed a group of 4 motorcycles doing triple digits 3 times. After the event I stopped at a gas station before heading home and heard a chick yelling "Hey Richard" It was one of those 4 bikers. Turned out she was the service advisor at the local Porsche shop. She told me she never ever wants to hear me say "I was just crusing along and..."