Bro if you want to give your car on rent, you can talk to Warid, Jazz, Telenor, Ufone. Once I have planned to rent out a car to them but if you have a cash car it would be a good deal for you, and if its on installments then its of no use, they were offering my 38,000 per month from morning 9 to 10,11 may be 12 but if you want it back on 6-7 30,000Rs. Both package was with driver and as john2 said your trust able driver is must, because at the end of the day you will get know from him that where did he take the guests, engineers or employees. This way your car will be more safer. Contact to these companies.