About that mysterious Vatican cocaine shipment

Here's a story that raises a few questions.

• does all Vatican mail get routed through Germany?
• is Vatican mail not subject to diplomatic immunity?
• does the Bundespost publizice all suspicious packages or just those going to Rome?
• what are the advantages of shipping "liquid" cocaine?
• what is "liquid" cocaine?
• where does that fanciful price for 300g of cocaine come from?
• how often does a Vatican emissary travel to Liepzig to pick up the papal mail?

Sounds like it was a slow news day somewhere, and somebody thought they'd liven it up a little by putting the words "cocaine" and "Vatican" in the same story. After all, who do we know in the Vatican who is from South America, nudge, nudge, wink?...