Bubble Powered Boat

This is my submit for Make it Float Challenge
Basically the idea is use an Alka-Seltzer to impulse the boat.

I made some tries but didn't had big recipient.

This is my first design made by myself
i'm pretty happy with results.

Definitely i will keep drawing for next challenges and personal projects
Good luck to everyone :D

Uploaded video
http://www.4shared.com/video/Ty6H8hUPce/trimEE74C3DC-459B-4DE2-8D7C-B1.html