Quote Originally Posted by calvin View Post
the terrain I am after beating is only accessible by motorbike at the moment This site explains it much better than I could http://www.riders.org/default.aspx So really size is a major factor.

Its not really about what I want, but what will do the job best, so even though I have an idea of what needs doing improvement is always possible, always. I think the major downfall of the big trucks is the Size, weight and expense.
Propelled airship thats what you want