So, when I first started dating my fiance he was driving this bright green jeep and the love of his life was his rescue dog. Since, then I have slowly made my way up to the top of that list of amazing things in his life

. The joke has always been that his jeep, dog, and I are the three loves of his life and depending on the day, the order is debatable.
I have had this idea in my head that when we get married, I want to surprise him with a grooms cake of him and his puppy in his green jeep.
Since then I have come to realize how pricey weddings are.
So- my question is ....does anyone know about how much it would cost to get a cake like this? Am I nuts for wanting to keep this in the budget?
Any help would be great!