Those little gas engines are cool- At our club meeting in March, a fellow from the local small engine club (Wish I could remember the name) brought over a similar engine that he designed and built himself... It was beautiful and was an amazing runner- very smooth and had a great sound...
The submarine in the photo actually sank while it was running, there was a loud bang and then it sank to the bottom, the owner went swimming for it. I took this picture before it sank, the one in the previous post shows the damage to WTC after it was recovered.