I agree with VDC on this one. I had the same problem with my 2010 Cobalt and a HHR I test drove. The salesman (whom I’ve known 22 years) suggested reclining the seat an extra notch or two.
My kids bought me a seat cushion with a massage unit, once I installed the cushion my head was about 2" from the head rest. I took the cushion out because I was not comfortable being that far from the head rest.
Ed B.