Rudel and his men built an illegal business, disguised as a haulage company, around this discrepancy in exchange rates by smuggling large sums of money from one zone to another, buying and selling currency with a profitable margin. Wolfrum states that his contact with Rudel ended in 1948 after Rudel had left for Argentina.
Rudel and his associates established an illicit business, disguised as a transportation company, to profit from the difference in exchange rates by smuggling money between zones. This operation was conducted by Wolfrum's contact, who ended their relationship with Rudel in 1948 after he relocated to Argentina.