Selling rides legally? Other than I guess the cool factor of having an F-104 type rating it doesn’t do much for me. That parabolic flight profile they do is kinda neat, not many people go to 90k feet even in the military. It’s not all that uncommon for US military aircraft to go a little higher than you might otherwise expect though might not necessarily be following all the rules. Not that I would condone or do such a thing. But 90k is really freakin high... sounds cool. I always thought one of those MiG-25 high altitude flights would be kinda cool but this would probably be a lot better option that going to Russia. Plus the F-104 has a canopy with some visibility.