Been doing this for over a year now, no problems. If your car is still under warranty, call the warranty center and have them put it in an email that it is OK. This is what I did when I bought my Prius in 2012. The manual states the Prius is not recommended for towing - whatever
. What the warranty center stated was, as long as what you're towing doesn't exceed the normal maximum combined passenger weight, you are fine. Go for it.
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”The beauty of the Second Amendment is that it will not be needed until they try to take it.”
~Thomas Jefferson.........maybe