If flying is your thing, check out the GEN H-4. Powered by 4 x 125cc 2-cylinder engines, the H-4 boasts “2 sets of coaxial, contra-rotating rotors, which eliminates the need for a tail rotor.” Two caveats: you have to build it yourself and it costs $30,000.
World’s Smallest One-Man Helicopter – TechEBlog

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