Hi,
Don't ever do that mistake of shipping the car.. My friend has experienced it as the car would not reach u in time in Muscat and more over there would be slight damages that u can expect and the insurance company would take ages to approve the insurance which is caused internally due to loadng the car. The worst thing is after spending thousands of Riyals to ship the car and again change the registration to Muscat is a big loss of money and time. Rather suggest you to sell the car in Doha unless and untill it is very close to your heart or gifted by your partner and get a same or better car in Muscat avoiding all the unnecessary expenditures and risk.