Skybolt would have been cool. Blue Steel was more in the category of "this should never been made but somehow was operational".

>A high test peroxide and kerosene propellant that had to be carefully purged before fueling to avoid a massive hypergolic fire.
>In wartime this would be done by some national service conscript on the apron of a tiny dispersal airfield.
>Fitted with a nuclear warhead with no PALs that we know with some certainty would have detonated if set on fire.
>Was designed with just enough fuel to be punted over the heads of the nuclear tipped SA-2s protecting Leningrad.