From DealNews.
http://dealnews.com/Porsche-Leipzig-Test-Track-Souvenir-Plaque-for-free/385378.html
Porsche offers a Porsche Leipzig Test Track Souvenir Plaque for free in exchange for filling out a short survey. (This will register you for the Porsche website.) That's the first such offer we've seen from Porsche. The plaque features a portion of the guardrail used on the Leipzig test track where the brand tested its newest model, the Cayenne. Note that limited quantities are available and souvenirs will take four to six weeks to arrive