Come out of the rain

My dad and a I are driving around, it's night and raining, we are tired.  Finally we get home, we fall asleep exhausted, I at the wheel, Dad, as it turns out, has opted to sleep on a bench next to the curb, covered by a dark raincoat, and hood or hat.  I can't see his face he is completely covered and apparently comfortable.  "Come on Pop, let's go inside."  He stirs slightly but does not waken, "no I'll sleep here."  He sleeps, in the rain, he won't come in.