Gotcha @Happy Joe! I mix it up by taking my 2001 Honda CR-V to Pennsylvania's forest roads for dispersed camping. I'm a little envious of those who live in Colorado (have the best of both worlds, primitive camping and overlanding). My knees are good, but the hip joints become painful every so often (depending on pack weight or pace).
I always bring the Big Agnes McKinnis as a liner, plus it helps to use as the main sleeping bag on warm nights with warm mornings (see CR-V interior photo) when the Hyke & Byke bag is overkill.
You're correct about the sleeping bag ratings, but since I've recently discovered the difference between a "cold sleeper" (me) and "warm sleeper" (wife) the gear preparation is dialed in better (not perfect yet).
I always bring the Big Agnes McKinnis as a liner, plus it helps to use as the main sleeping bag on warm nights with warm mornings (see CR-V interior photo) when the Hyke & Byke bag is overkill.
You're correct about the sleeping bag ratings, but since I've recently discovered the difference between a "cold sleeper" (me) and "warm sleeper" (wife) the gear preparation is dialed in better (not perfect yet).