Kyle, don't be so hard on old man RJ.
Yes, we all recognize he was by Henry Ford's side when he built the first Ford, take it easy on him.
All kidding aside, I believe that one of the reasons for having an enclosed trailer is to:
1. Protect the investment.
2. Due to rule changes and competitiveness, more engines and drivetrains are being built on the ragged edge necessitating more spares and tools to be carried. Difficult to do in an open trailer.
I agree, there is a coolness factor on pulling your car in an open trailer, especially when other people pass you and give you a thumbs up, you stop to put gas in the rig, or stop to grab a bite at a restaurant.
Gosh, you are making many of us feel old!