The cheapest way to find a driver for your car is to advertise at local colleges for someone who's headed toward your vehicle's destination at the next school break. This isn't the safest option -- you're trusting your vehicle to someone who may be young and inexperienced -- but the cost savings may be worth it to you, particularly with a less valuable vehicle.
Some professional auto transporting companies also offer drivers to transport cars, which costs less than hauling your car by truck. The drivers are screened and the company's insurance helps cover you against any problems. These companies depend on the availability of drivers -- often students or retirees -- and you will have to pay a premium for deadline service.