Gasoline has the largest building in it's class. A whopper of a floor plan, 7 x 4. That's 28 greedy little squares hogging up precious map space.
Most people might try to produce goods with buildings that takes up less space. I got lucky. I make Explosives and Tinplate. Those are the two smallest production buildings by space, 3 x 6 [18] and 4 x 5 [20].