Inside the steel safety cage of a car’s frame, behind the noise-canceling windows, sipping on a soft drink as your children watch “The Incredibles” on the built-in DVD player behind you, you can be lulled into an illusion of self-sufficiency. While the drivers around you might have similar vehicles, your vehicle is your world, and you are able to split from the caravan at any given time. Riding with a group of motorcycles is more akin to belonging to a pack. The bikes around you create your safety net. They provide your soundtrack. And if one splits off, the group must either adjust for the absence or stop altogether….