I kind of want to see this just on the recommendation of Sako's Movie Shack Asian Mini-Movie Reviews.
"This is a cool, insane big-budget Japanese movie from the late 70′s, in which a trendy young high-school science teacher Kido Masato (nicknamed Bubble Gum by his students) somehow makes a nuclear bomb in his Tokyo studio apartment by breaking into a nuclear reactor station and stealing plutonium, in order to hold Tokyo to ransom for his rather odd demands. The movie plays on the public’s fear of nuclear weapons, but whether or not you’re scared depends on how far you’re willing to suspend your disbelief. After some early attempts at political commentary, it turns into a full-blown action movie, with endless jaw-dropping stunts which includes a fantastic high speed chase on the streets of Tokyo as our anti-hero is pursued by dogged police detective Yamashita throughout the movie."