So I traded in my 2007 Prius yesterday. Didn’t really need a car because the Prius has been excellent but was being spontaneous. Did the test drive and everything but didn’t really notice ice this until I got home and wanted to know if this is normal since I don’t know anything about the suv hybrids. Only in Reverse there is an obvious and somewhat loud whining noise. It sounds like it’s coming from the engine. I have to take the car back next week for Ziebart treatment but wanted to know if this was normal or should I be concerned? Thanks!