A: Open car shipping carriers are similar to those you see transporting cars to and from dealerships. These carriers range in size and capacity. Vehicles that are shipped via an open carrier are exposed to inclement weather and road conditions. Enclosed auto transport carriers also range in size and capacity. Since these carriers are covered, the vehicles in transit are not exposed to weather or road conditions. Enclosed carriers are recommended for custom and antique or classic cars. Enclosed auto transport is also more costly than the open carrier because of the high insurance policy.