Designed to support your back, the best car seat cushions for long drives are suitable for your spinal support. In addition to providing protection and comfort for your back, this seat cushion will also protect your chair from wear and tear. A proper pair of car seat cushions will benefit driver safety if you have a large vehicle with a bad blind spot. In addition, the best car seat cushions for long drives are usually made to have good air circulation. With this, you will feel comfortable and not sweaty in the lower area because your car seat has good air circulation.