Custom made triple kart stand (which converts to a double kart stand to aid in loading). It is on pneumatic castors (like an RLV kart stand). We used this to hold 3 laydowns in a standard 6×12 enclosed trailer with a ramp door.
Could also be used to hold sprint karts.
I live about an hour south of Daytona if you are interested in using it for your haul back north later this week!