In the very beginning of Wesworld, I was looking both at the 40mm and 20mm as weapons I would use. Navweaps give the Oerlikon date of design as 1939 and the Bofors date of design as 1936.
Of course that does not mean that a 20mm Oerlikon is not around in the 1920s. Probably a predecessor of the one we know from WW2. You got a link somewhere on it?
And back to the O.T. part...
I watch the occasional NASCAR, or even CART/IRL, race.
I assume that you also watch the big one then? (Indianapolis 500)
I think that both races at Indianapolis were quite interesting this year, especially the F1 fiasco.
^_^
Channels I watch (here in Holland or on holiday in Canada):
Discovery, Animal Planet, NGC, Space Channel, History Channel, Speed Channel.
Of course the PS2-Channel and X-Box-Channel, too.
And let's not forget the Wesworld Channel that is available only via internet.
:-)