Author note: Have fun with this cake! The toppings can vary depending upon what is available in your pantry or what sounds good. Sprinkles, chopped nuts or crumbled chocolate wafers would also be a fun addition. The cake needs to be eaten within 8 hours. If it sits in the fridge longer than that, it begins to get mushy.
Cut two long pieces of plastic wrap. Line a loaf pan, by laying one long piece of plastic wrap vertically and a second long piece of plastic wrap horizontally. Excess plastic wrap should hang over the edges of the loaf pan. Set aside.
Combine the whipping cream, crème fraiche, vanilla and sugar into a mixing bowl. Whip, with an electric mixer, on high until stiff peaks form, about 3 minutes. Make sure there is no runny cream, only whipped cream.
Add one layer of chocolate wafers to the bottom of the loaf pan, about 8 to 9 wafers. Top with whipped cream and a hefty drizzle of caramel sauce. Repeat these steps until the loaf pan is full. The last layer should be whipped cream.
Cover the top of the cake with the plastic wrap that is hanging over the edges of the pan. Place into the fridge for at least 6 hours, up to 8. Place the remaining whipped cream in the fridge to be used later.
Before service, remove the cake from the fridge. Top with the remaining whipped cream and chocolate chips. Place into the freezer and let set for 15 minutes. Slice and serve immediately.