Harvey Wallbanger Cake

1 (18.25 ounce) box yellow cake mix
1 cup vegetable oil
1/4 cup Galliano
4 eggs
1 small box vanilla instant pudding
1/4 cup vodka
3/4 cup orange juice

Combine all ingredients and mix for 4 minutes. Bake for 45 to 50 minutes in a Bundt pan at 350 degrees F. Sprinkle with confectioners' sugar if desired.