When you buy through our links, Business Insider may earn an affiliate commission. Learn moreAfter testing several car seats, we found options from Kong, Sleepypod, and PawsPik worthy of recommendation.Liz Coleman/Business InsiderThere's a lot of confusion about the safest way to transport dogs in a car, but letting them roam free isn't advisable. Dr. Jessica Bell, associate professor at Washington State University's College of Veterinary Medici…