Wrong
A 6 or 8 inch line would have a max 5000 lbs of force - not even enough to pickup an escalade.
2009 Escalade weighs 7,300 lbs. The hydrant would not be able to lift the entire SUV, you are right here. However each side of the car only handles half of the force - 3,650 lbf. This means that a hydrant could easily flip the car, or redirect it into, say, a tree.