I found two interesting links about LARPs today. If you are interested in LARPs, I highly recommend checking them out.

Here is one about Nordic LARPs and a number of introduction videos:
http://dymaxion.org/essays/larpreadinglist.html

Here is one about Jeep LARPs (which is another freeform type, but about actual cars):
http://jerome23.wordpress.com/2013/06/25/scandinavian-larpfreeform-in-england-a-new-approach/