We had great road trips in northern Wales on roads that were no where near as luxurious wide as in that Scotland link view. The mountains were the tallest in Great Britain (Mount Snowden). However, no way could we have done it with a Class B camper van. A Kia Sorrento SUV felt huge.
As for great road trips in a Class B I have to say the Alaska Highway and the roads to get to the start of it is a classic trip that should be experienced.
2015 Advanced RV Ocean One Mercedes Benz Sprinter
Previous Class Bs:
2011 Great West Van Legend Sprinter
2005 Pleasure-way Plateau TS Sprinter