When towing a car do you need to do anything special?

It depends on how far you're towing it and what kind of car it is. If it's a rear wheel drive vehicle and you're going very far you may want to disconnect the drive shaft. Other vehicles are on a case-by-case basis. Contact the dealer for specific information about your car. Often it's worth the expense of renting a "tow dolly" if you're towing a front wheel vehicle very far.