Chocolate coffee cake: In a medium bowl combine flour, cocoa, sugar, baking powder, salt and espresso powder and stir to combine. Set aside. In a large mixing bowl, beat vegetable oil, eggs, soy milk and vanilla extract until combined. Stir in dry ingredients to combine. Slowly mix in hot coffee until combined. The batter will be very thin. Divide batter into the two prepared baking pans equally. Bake for 20-25 minutes. Let cool in the pan for about 20 minutes, then remove from pan and transfer to a cooling rack. Let cool to room temperature.