Heat oven to 350 degrees. Spray bottom of a 13x9 pan with baking spray (with flour) or with oil spray and then flour it.
Beat cake ingredients in a large bowl on low speed for 30 seconds; increase to medium speed and beat for 2 minutes. Pour batter into prepared pan; bake 30 minutes. Cool for 15 minutes. 
Mix glaze ingredients in a sauce pan and heat to boiling over high heat, stirring frequently. Reduce heat to medium and boil another 2 minutes, stirring frequently, until glaze has thickened somewhat. Poke holes in the cake with a fork every inch. Pour glaze slowly over the cake. Allow to cool for 1 hour.
In a small bowl, beat whipping cream and powdered sugar until soft peaks form. Sprinkle the cake with Kosher Salt then garnish the cake pieces with whipped cream and lime zest.