Volkswagen Up!
This little car can do so many things. I did long-distance trips sitting in the back, hauled a dishwasher in its boot with the back seats down, even used it as a normal car for commute and it's great to drive. Sure, you have to understand the limitations (it is a city car and mine had 60bhp) but for what it is and what it costs to maintain and operate, I loved it so much.