I have to ask, every large pick-up I've had a go at driving has the turning radius of an aircraft-carrier, I know that American roads tend to be wider, but how many 30 point turns do you find yourselves doing in it?
The reason the turning radius is relatively terrible is because the axels are so far apart (good weight distribution).
Some of the big trucks have rear wheels that steer too to help with that.
Also, have you driven a Ford C-MAX? It's very narrow for a four-door sedan/hatchback, which is great for getting into tight parking spots, except it has the worst turning radius ever.