Hello, I'm going to Seattle juni 15th, and I rented and already paid for a convertible car. Class K. What are my chances of getting a mustang? I dont want to end up in a Volkswagon Beetle. And what should I do if there is only a Beetle available ?

I'm not from the U S, so I really dont know what my options are.
Your help and info is much appreciated.

Warm regards

Bill Knol