I think if you go back to the dealer and tell them that something has come up where you are most likely not going to be able to financially complete the purchase, and then see if you can get a refund of your deposit if you announce your plans to come back and purchase from them when your crisis is over, you might get some where. Only if they can use the vehicle in stock and if they practice any sort of customer service at all. You might be able to get even a partial refund. Its worth a try.