The first step in choosing a reliable auto transport service is to research and compare different companies. You can start by checking online reviews, asking for recommendations from friends or family, or contacting your local Better Business Bureau. Look for companies with a good reputation and a track record of successfully transporting cars across the country. It is also essential to compare the services offered by different companies, such as door-to-door auto transport, terminal-to-terminal car shipping, and open or enclosed auto transport.