There does seem to be a bit of a surgance in pickups at the moment, Mitsi L200'animal', Ford ranger/thunder and the Toyota one. they are a bit of a fashion item at the minute i.e. driven by people who really don't need a pickup but want to look macho.
It doesn't help that we are paying over £4 a gallon for petrol where you lot the other side of the pond pay under $3 ( about £1.60 )
As for parking
there was an article recently how council car parking spaces can actually be 6" smaller than a Ford Focus so trying to fit a Dodge Ram in would probably need about 3 spaces
One other thing of note is cultural, because your country is physically so large you tend to drive further than we do and historically American cars tend to set their stall out to be big comfy mile munchers. In Europe we tend to prefer cars that don't run and hide when you come to a corner