[colorado tanker]

Hitler was obsessed by the prospect of wonder weapons, but was dismissive about a nuclear bomb. He basically thought it was a fairy tale dreamed up by a bunch of Jewish scientists.

Regardless, the Germans could never have refined enough uranium to build one by 1945.

[Ouderkirk]

My understanding was they were not serious and didn’t think they could make it work in a timeframe that would be useful in the German war effort. They also feared for their own lives if they committed too enthusiastically to the project and failed to meet over-optimistic timelines.