We've seen him in the original suit and that's all man made but pretty much all the footage we've seen of iron man in his mach 3 and mach 2 costumes have been very cgi heavy. That's fine for a large aspect of flight but it shouldn't be all of it. I also say the tank scene we saw for the superbowl clip was unnecessarily high in cgi. I'm not sure what direction favreau is going on in this but i personally wouldn't be happy with very long grounded (non flight) sequences where iron man was completely cgi. Marvel has complete CGI characters, they are known as hulk and abomination, Iron man shouldn't be one of them. Is anyone else interested in seeing some iron man shots that aren't CGI and just seeing how the costume looks and feels with a human inside?