I have a 2003 Honda Element. Love this car!
When I noticed my tank was getting low, I decided to see how far I could go on the gas light. Well, I managed another 60 miles, but forgot to tell my hubby of my experiment and he filled the tank. But 60 miles is good to know--- I can get home from the city (50 miles) or go to work/town twice (15 miles one way). One of these days I will find out how far exactly. Meanwhile, 60 miles is a good distance.
I don't see a problem since most 2 month olds sleep so much yet. Have the seftay seat positioned properly in the center of the back seat, with the child facing the back seat. I found through experience that car rides actually calm a child and lulls them to sleep at that age.