if the trend is for SFI (or others) to spec safety equipment (both SCCA and NASA, et al), will they ever take over the roll cages as well?

they currently have these specs available for dragsters and roll cages for tractor pulling contests:

http://www.sfifoundation.com/

now that is a forum i'd like to listen in on. farmers learning about what SFI is requiring for their safety gear.

and btw, i grew up on a farm, so no disrespect intended. but they are quite independent minded.