A trailer is an external vehicle attached to a powered vehicle (e.g. sedans, vans, trucks, etc..) to provide additional storage space. Cleaning services, contractors, and caterers use trailers to transport their equipment and deliveries. With a box shape, trailers are ideal vessels to be transformed into mobile billboards for branding and advertising. Together with the vehicle towing it, both wrapped vehicles present consistent and powerful marketing working in sync to represent the same brand. Additionally, it shows existing and potential customers a detail-oriented image and the brand's dedication for quality.
When trying to recall the trailer we most commonly see in our daily commute, U-Haul's cargo trailers definitely come top of the list. According to AMERCO, U-Haul's parent company, the moving equipment and storage rental company has more than 120,000 trailers in their fleet. Imagine the number of impressions these trailers generate traveling across the country everyday, making U-Haul a national household. Using Geopath's data (vehicle wrap generates 30,000 to 70,000 impressions daily), U-Haul's wrapped trailers create 3.6 to 8.4 billions of exposures for the brand each day! (Trailer Image credit: U-Haul)
A trailer is never alone, it always follows the path of another vehicle. Thus, its trailer wrap has a complementing design that goes together with the main vehicle towing it for consistent branding. 
A clean unbranded vehicle - 
