Why did he build it? Because he was broke from abandoning several big projects and no entity would give him money anymore. He offered up a "Death Ray" to the US government but they had loss faith in him (especially when he admitted alot of the technology he'd need wasn't exist yet) So when they turned him down, he went to foreign governments and even enemy nations of the US offering them the exact same weapon. even they turned him down because of his reputation.
Finally when secret agents ransacked his hotel looking for the plans and found absolutely nothing, he confessed that he hadn't written them down and "kept them in his head" because he didn't trust anyone. Hero. right.
Finally when secret agents ransacked his hotel looking for the plans and found absolutely nothing, he confessed that he hadn't written them down and "kept them in his head" because he didn't trust anyone. Hero. right.