That was some skill right there.  That dolly is the only reason that could be done though.  I would never want a job that required me to run roads like that. 

Cool  Didn't even know that was possible . Very impressive..

My skill to back a truck with a dollytrailer or just a trailer is good, but far away from that. Put that driver into a mixertruck, and he will unload the concrete in the hopper what ever bad place the pump is outrigged on.

Swedish timbertruckdrivers use their timbercrane to lift the emty dollytrailer into right position (a skill of cheating) - or force the trailer to turn, by slowly pulling it around a big tree. They do also very often use only the trailerbrake to force it when they back or drive forward, to get it into right position.

I know a guy who repair timbertrailers - he have told me how the Swedish timbertruckers misuse their trucks in the wood. New trailers or trucks that looks that they are 10 years old. It all is changed every 3:rd year to brand new.   

It is not that difficuled if you have a camera on the back to keep an eye on the triangel.

still nice to see, with or without rear camera

You have no use for a rearcamera to back a truck like this. Look at this skill!!

http://www.youtube.com/watch?v=6xGRv0oTK3Q

Definitely some skill. I used to cheat and use my trailer brake to squeeze a tandem 30ft reefer trailer I used to haul around in some tight areas in the Downtown area in my city. Also looks like the driver's done that quite a few time.