That is not very green....interesting though in its time.....in todays world, it reminds me of a mosquito sprayer. Not to get off the subject but some interestng facts about truly going green and that is with compressed air. In a 3 inch diameter tube an object can be proppeled 1000 yards a minute at 10 psi. A four stroke motor would lose probally 70% of its power but a 2- stroke motor would be acceptable with compressed air, more ideally is a rotary bike motor with compressed air. I cant wait untill this happens with these bicycle motors and I am putting off any future bicycle builds untill I can go truly green. I will enjoy riding with Golden Eagle Products for now.