I have to admit I did not pay much attention to Weiss Manfred military vehicles. The reason for that is simple: the historical research has been tainted by forged documents by some so-called historians in Hungary.
So I know that Miklos Straussler (also known as Nicholas Straussler) built the AC1 in 1932 at the Weiss Manfred factory. He later emigrated to the UK and joined forces with Adler.
So yeah, I missed this one