Get a Late 80s Dodge Caravan Turbo...still MOPAR if it matters! I grew up in minivans...so much room for activities. I remember playing my Gameboy on road trips as we passed under each street light.
I'm pretty consistent at 21-24mpg with an all time average of just right around 22mpg on a stock Sport S with highway tread tires. Although, I drive this like I'm going to church on Sundays and I left an hour before I needed to get there.