Well, rated companies make it a point to get their customers to post reviews. It is part of their business model. They quote, get orders, move cars and then get customers to post reviews. The feedback of your customers is one of the most important parts of transporting a vehicle, second only to acting on the feedback to make improvements.
Its very easy to receive reviews. You need to contact your customers throughtout the transport to ensure everything is running smoothly. Also most important is to call the customer upon delivery of the vehicle to ensure everything went smoothly and ask them for a review. Send them a nice email on how they can post a review and 9 times out of 10 the customer always posts a review about your company.