Claytile

I assume you drive a diesel car also? Same difference.

I think it's certainly feasible and marketable for a 100 hp gasoline (up to E85!!!) modern tractor engine. Could be done with a single turbo, fuel injection, and electronic ignition. It would be naturally quieter than a 3-4 cyl diesel, and it would/should start at -20F temps easily. No DEF needed. Yes, I understand there is EPA standards that would have to be met, but shouldn't be hard. No complicated fuel filters needed for gasoline.

Instead of farm mfg wasting time & money engineering autonomous stuff, they could put an engineer team on 100-150 hp gasoline engines that some people would buy now. 
Look at what GM, Ford, and Chrysler are doing with high h.p. gasoline pickups in 2020.

Yes, I grew up dumping gas in tanks out of 5 gal cans also. 

Ford, GM, & Chrysler will differ with naysayers on hp vs fuel burn. It costs an arm & a leg to keep modern diesels happy. We've got a bunch of them too. Cat, JD, GM, Deutz, Kubota, etc.