I have been reading about what you should expect for fuel mileage. I have noticed a steady drop in MPGs over the years. Like 15 years ago I took my 29.5 foot Coachmen on a long trip and got 9 mpg. Now...
Never mind the 70's. LA air is still horrible. Last year I was out that way, coming down I-15 through the Cajon Pass. As you come down the pass into San Bernadino you can just see the smog in the air. Talk about nasty! It was down right discusting. Thankfully the mountains keep that nasty air from coming east.