Nothing has gone wrong yet, other than the front seats need to have the bottom of the upholstery clamped back on.
There is not much power, and I have yet to see the advertised 35mph (I am getting 30).
It didn't cost much, so really I am pretty pleased with it.
One thing about the gas mileage. If the gasoline has the ethanol added, it will cut you mileage drastically. Usually about 15 - 25% in my own experience.
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