Wow those are some EXCELLENT tanks man, very realistic to the way they would probably be designed.
I wasnt aware that Google Sketchup was capable of building complex models like that, I thought it had restrictions on what kind of surfaces/shapes you could build with it.
In respect to the UfoPaedia UI style . . . I always thought tthe detailed graphical style and orientation of the TFTD UfoPaedia was just over the top. It could have been improved upon, but not by much. It was one of the parts (among many) that I enjoyed about that game, over the original.