My idea is a private company that assist with protecting cars that are broken down, crashed or need protecting on the motorway or roads.
Its hard to explain but would have a fleet of cars with flashing lights so that if your awaiting recovery on motorway you have a car that can protect you and make sure your seen.
Other tasks could be escorting loads etc
collecting rubbish of roads or assisting police and highways with road closures, lane closures or collecting debris off the roads
what is your thoughts?