Cars can be imported regardless of left hand or right hand or regardless of country. The only problem is the cars from KSA will be left hand and locally in Pakistan Left hand is not preferred. But importing left hand cars like Cadillac, Hummer etc will be useful as they sell in Pakistan and most of the such cars in Pakistan are not newly imported. So importing expensive American cars will be useful as Pakistan has a certain craze to American cars and they understand that American cars will not be right hand. Where as importing other brands like Toyota, Honda, or other brands in which right hand is available in Pakistani market is not preferred as this will be useless. and converting cost to right hand and duty for will not give good profit and may result pretty much to no profit no loss condition.