Service manuals are a wealth of information, including features and hidden options that otherwise go unnoticed. I have made it a point to own the service manuals for all my recent car purchases over the years for this reason alone. I'm guessing the option is available in other markets like the UK or Asia. These cars are sold around the world with each market having different safety regulations, expectations and standards.
Unfortunately this forum is dominated by American and Canadian owners so we only ever hear about our own Crossfires, assuming they are all the same.

I wonder what else is hidden in these manuals?