Okay, luckily I was able to get onto a PC, where the images that weren't showing up before are showing up now.

This ambulace is a Dodge B-Series...

... just like it says on the door.

However, considering the type of insignia it has, I don't think this B-Series is a Dodge Ram. I'd say any B-Series from 1979-82, probably a B-250.

From what little I can see of this ambulace...

.. I can still tell it's a Ford Econoline.

As for the bus...

.. it looks like a GMC "New Look." I tried looking for evidence that it may be a Flxible or Flyer New Look, but I can't find any.