I’ve been looking for this movie for years. I saw it when it came out when I was a kid and have only seen it a few times on TV in the 70s. It starred Mike Conners of Mannix fame and had a plot that was stolen by the James Bond movie Moonraker (they even swiped the Rio setting). A mad billionaire wants to repopulate the world after wiping out everyone else. It’s a cheesy spy spoof film, but I remember finding it entertaining when I was a kid. Anyway, someone finally uploaded the trailer on YouTube.