I've done it with only natural gas before. I fuel in Vegas, then Cedar City, Utah, then on to the I-70 to Richfield, Utah, then Grand Junction, Colo. And without giving up all the trunk space like I did in my Ford. As it gets late, a fog uncommon to this stretch of the I-70 sets in. Colo. Day 2, January 19 I'm doing phoners from the road for the conference in Des Moines.
Cell phones do sometimes serve a higher purpose.
I stop in Glenwood Springs, Colo., to top off. The Cavalier's natural-gas system shuts down again. It must be the altitude. I re-start it again. Ten miles down the road, the car switches to gasoline again, and it won't switch back to natural gas.