A guy from Odessa whose name is Vasily Chikur has designed and built a cool single-seater submarine. It has already successfully passed several tests at the shore of the Black Sea. Vasily even demonstrated
several tricks like sailing under the rescue boat whose passengers were watching the experiment. According to Vasily if he uses a dry accumulator he could rotate along the fore-and-aft axis.
These days the environment conservancy awareness is at the rise. More and more ways to go green appear worldwide, replacing the traditional but nature unfriendly methods of doing things with more greener ones. Not to miss that, one Russian inventor reportedly started a production of the most green lawnmowers one can imagine. The idea was to build a large size mobile rabbit cage without the flooring inside. It could fit enough rabbits and cover some part of the
lawn for a few hours while rabbits eat. Then in a few hours its being moved to another neighbor spot and then stays there for a few hours more while rabbits finnish all the grass around. The more rabbits you have inside the faster this "lawnmower" works. At a good pace you can get your yard mowed just in one day, wasting zero gas and chilling around while it mows itself. Also no annoying noise is being heard while it works.