Airstream was neither the first nor the only manufacturer of streamlined trailers with examples shown here, by Spartan, Silver Streak, Westcraft and Bowlus, among others, yet they are deservedly the best known and continue to thrive. Because of their futuristic design they have a unique place in the history of technology. An Airstream was used for quarantine after the first men returned from the moon and today takes astronauts to the Space Shuttle. Their iconic silver bullet shape still looks modern, yet it dates from the 30s and is based upon a prior streamline designed trailer, called the Bowlus. Here is a list of some of the most beautiful things to have ever been on the roads.