Coleman used to make something similar, sold at Walmart & looked pretty nifty until Walmart wanted to purchase them for less and had their 'house brand' start making them, total chineese crap. Bass Pro has some as well as Sail (Canadian Outdoor Chain).
Now will someone make one for 5 people? I don't want to have to start carrying this around for my troop! :-/
http://www.costco.ca/Lifetime®-6-ft-Folding-Picnic-Table.product.10364514.html