I saw an ad for this in Grassroots Motorsports magazine. The one in the ad and in the brochure even has moon hubcaps. The underside is skinned!!
BRE: BRE Aerovault Trailer
Quote:
Our goal with the Aerovault was to make a car trailer that was as light, low drag and economical to tow as possible. With current fuel prices we heard many people complain about their costs for towing their heavy ""bread box"" trailers. At the same time, we’d been looking at trailers to tow our own Superformance Daytona Coupe and Datsun 510. We were frustrated at the lack of aerodynamics knowledge there seemed to be in the trailer industry.
Ultimately we decided to design our own trailers. The result is the Aerovault.
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Check out the brochure- they explain the design elements.