I have tried diferent solutions for outside visualisation and so far the best way, in my opinion is using DLP rear projection televisions.
A good example for this is this one :
http://reviews.cnet.com/projection-t...-32313066.html
It has a bezel of only 1 centimeter, so combining 2 or more of these gives great result.
The advantage is that you don't have to work with mirrors, screens, projectors. Resolution is great and combinations are easy. TH2GO or like in my case, complete wrap around with only 3 tv's (GA cockpit).
Down side is that these televisions are difficult to find in Europe, the newer D-ILA versions are but cost quit more. USA is no problem.