Here in N.C. it can get hot in the summer and the cabin temp. indicator was showing 91* the other day. With the AC set at 73* what is the coolest cabin temp. that I can hope for ? I once worked at a HVAC company and the boss said that the best you can hope for in your home is 20* differential between OAT and indoor temp. so don't be quick to blame your home unit for poor performance. My 2019 1LT interior is all black so that doesn't help. Haven't taken along a thermometer on a ride yet. The small temperature indicator didn't get much below 91* during my 2 hour drive.