Hot wiring won't help. If the immobilizer won't receive signal from the key it won't start.
You have 2 choice:
1, he will Fedex the key overnight to you.
2, if you can prove the ownership of the car Ford or a mobile locksmith will cut you an other key.
One last thought to add onto Zee's comments:
You will have to have two new keys cut. They will both have to be programmed to start the car, as the anti-theft chip is in each key. SO...you will have to have the vehicle towed to have that programming done...or a locksmitch that comes out to you could do it.
Either way, the cheapest deal is probably the FedEx one...