The problem is that the difference between a low tech and a high tech diesel tractor is mostly emissions and some loss of efficiency. The difference between a low tech and a high tech electric car is a 25 mile range and a 250 mile range, a top speed of 35 mph and 100 mph, carrying capacity and so on.

I recently did a lawn tractor conversion from gas to electric and what I got was in my opinion significantly better and more reliable than a commercial option at 20% of the price but it is limited to 4mph. Scaling it to 5 would require a lot of custom fabrication and a much more expensive drive motor. Once this tech is significantly better and cheaper to the point of being a commodity it will be a different story. For now it just isn’t.