Cold Draft Beer On Tap. Cold To Go Trailers has over 25 years experience designing and building custom refrigerated mobile draft beer walk-in cooler trailers for many industries. Cold to Go Trailers has been in the walk-in draft beer trailer business since 1989. We employ EPA Certified Techs and build to standard local codes. We construct USDA Food Service Inspected Trailers. We offer 24/7 Customer Support. All of our Draft Beer Trailers are thoroughly tested to ensure each product cycles as proper temperatures and maintains product load calculations. We care about our products and our customers and it shows in everything we do.