Am I the only one who thinks this looks like a bug in a Pixar film . . ?
I have a friend who is thinking about buying a bus to convert, and his young daughter doesn't care what type of bus he gets as long as it has 'bunny ears' - bunny ears being her description of the type of mirrors fitted to buses nowadays. I think you are right though - in the case of the Plaxton Elite's front end the mirrors look more like an insect's antennae above the insect's head.
My bus incidentally has a 'bunny ear' on one side and a normal mirror on the other. That's how it was built, but it's definitely going to have a pair of ears by the time I'm finished with it.
Regarding the Plaxton Elite, I think the most interesting thing about it is the curved roof; a lot of modern truck trailers here now have roofs shaped like this, so presumably there are sound aerodynamic reasons for doing it.