This is good because we get to feel the controls of the highlands of scotland and we could drive the 170 turbo star scotrail, 156 dmu scotrail in their new liverlie and could even put scotrails new 'hst' or use London North Eastern Railway instead which could be the fast service
This route would be amazing. It is also an incredibly beautiful line starting at the coast and working its way into the highlands you could have some amazing scenery that changes so much between the two cities, it would almost be two routes in one.