The insane pulling power of a Dodge truck

My DD called today to complain about the lack of power in her '03 Dodge (early '03, with 5.9L). Seems to have some sort of power robbing problem as well as a coolant system issue, and it literally just barely made it up a hill towing her horse trailer.

I just had to send her the link, to prove what these pickups are truly capable of...