how do you top building a homemade submarine?

You build a Rocket ship and use your home made sub to tow the launch platform out to sea for testing!

full article

unfortunately a hair dryer, aka o2 line defroster failed, but hell be at it again...

I liked Jalopnik's summary:

http://jalopnik.com/5619764/worlds-largest-amateur-space-rocket-set-to-launch

Jalopnik said: Next Monday, a small group of crazy Danish geniuses plan to launch their own homebuilt rocket into space, after towing it to the launch site via their homebuilt submarine. Who needs NASA?

Those guys are regulars on Something Awful. I've been tracking them for a long time. The sub was a masterstroke, now space? Awesome.