Sturbridge, Mass. has a heavy rescue trailer provided by a local businessman that runs the heavy wrecker service for that stretch of the Mass Pike.
It's equipped with a Hurst Tool, generator & lights, Speedi-Dry, some basic hazmat gear, shovels, brooms, heavy duty nylon strapping,a bunch of hand toolss and even a desk with fire and State Police radios.
Sturbridge Fire is free to use the unit on their own incidents (it can be towed by the Heavy Rescue truck). When the tow truck company has an overturned vehicle, they pick it up and use it as their command post/equipment unit on the scene.
While the trailer and equipment is owned by the towing company, it's painted and marked like a Sturbridge Fire Dept. unit.
Sturbridge used to have a nice internet site...but it seems to no longer exist