[j-c-c]

Over in "The Lounge" forum I shared a bus conversion I am starting. Its a combo RV/internal race car hauler. Bus is 40' so I have enough internal space, but Florida allows 45' max overall length less safety devices (mirrors?), and has an exemption for additional, unrestricted I believe, additional length for "approved" aero devices. Not finding how anything what/how is approved, listed or specified, whether individually or by design or manufacturer or whatever.

I can design the car hauler part so tail end of race car sticks out the back maybe up to 4' ft, that would give an addition 4' internal living or storage space, I have the skill set to fabricate a Carbon Fiber/kevlar top hinged (functions as mini canopy) rear aero hollow tail, that would enclose the rear of the protruding race car, and be the width of the bus. It would be a partially cored CF build to get the needed rigidity for the large panel areas and be light to facilitate its manual lifting and locking in an open position when car is moved.

It would have to incorporate road lights and a tag, as in order to be aero all that equipment would need to be relocated, Can't see much gain here unless I get at least 5-6' extension, with a Kamm style tail (bus 96" wide, Car is 70"? wide @ 44" extension), meaning in 6' I could go from 96" width to say 56" in width which feels too much, and I need the state to consider it an aero device to get past the length exemption. Good thing IMO is the shape can be almost anything as it will be a lost foam mold one time design. My concern is the bang for buck regarding mpg. Or I can just make a simple reduced sized functional cover to primarily cover the rear of the race car, and don't relocate lights or tag. Most everything I need above is already on the shelf except the foam for molding.