Dave,
A Sprinter is 22ft long! - that is where I think the hobby/business line is blurred. Not many people can keep one of them at home! BUT, if companies could develop a 2 part fuselage (bit like the JetWelt Strikemaster) then the customer base could be so much larger .
Anyway, guess this thread is about the rather nice new AW Gripen and not vans!
Mark