Here is a pix of a Chinese Motorcycle they are selling here, about $1100 new, supposed to get 60-80 mpg. Four stroke single it appears, 200cc ought to go65-70mph. They make a dual purpose bike too. Interesting.
I looked them up on the internet you would be lucky to hit 60mph. They have 7.7hp I wouldn't buy one. Maybe if it was given to me I would ride it around town but not outside of town.
I found a lot of stories online about why these chinese bikes are all piles of junk. The frame is bolted directly to the engine. And the head is made out of pot-metal :0