Hey if ur by urself did u try shopping around about shipping ur car to Seattle i think its not that expensive. My friend did the same thing when he was moving from Boston he shipped his car from there and flew here and he rented a car for a week and coz it took 15days for him to receive his car here so if u dont wanna sell ur car this could be option for you.

Also check with the company u work for because sometime they do pay ur moving fees and will provide you rental car until you receive ur car.

Good Luck