Sunny Lemon Cake

Name: Sunny Lemon Cake
Ingredients: 2 cups all-purpose flour; 2 cups granulated sugar; 2 tsp. baking powder; 1 tsp. salt; 3 large eggs, at room temperature; 1 cup buttermilk; 1⁄2 cup unsalted butter, softened; 1⁄2 cup vegetable shortening; 2 tsp. finely grated lemon zest; 1⁄4 cup fresh lemon juice; 1⁄4 cup lemon-lime soda; 1 tsp. pure vanilla extract