I'm not sure what the situation is in other cities/states/countries but Boston has more than enough Irish pubs to keep its thirsty citizens satisfied.
However, there are a few parts of Boston that are lacking Irish pubs, namely parks, backyards and other grassy lots, and that's where the PaddyWagon pub comes in.
The PaddyWagon is an inflatable structure that can be blown up wherever an Irish pub is needed, with room for 80 guests, food service and a full bar which the company supplies upon request.
This service is currently only available in the Boston area, but I could easily see this idea catching on here in Southern California, where we have perfect inflatable pub crawl weather all year long!
-Via design you trust