Rent cars can be reliable, depending on the company you choose. It is important to do your research and read reviews to ensure you are getting a reliable car and good customer service. You should also make sure to check the car for any damage before signing the rental agreement. Additionally, some airports offer car rental services with airport transport, so you can easily get to and from the airport. In California, some of the top-rated car rental companies include Enterprise, Hertz, and Budget.