Probably the best reply I've ever received on HN. Thank you. I learned a lot from this comment, particularly around the realities of old planes in practice... and EV tractors(!) That's actually such a brilliant application for electric; why don't they already exist?!

> IMHO, electric is going to revolutionize farming. Diesel is expensive (a lot more lately). And farmers burn a lot of it. Electric motors are small, reliable, quiet, etc. They have loads of torque. And if you are a farmer, you have plenty of space to harvest your own electricity with solar panels and maybe a wind mill and some batteries. There is a growing amount of high end stuff available in this space but also very affordable low end stuff. And this technology can be very simple and tinker friendly. Buy some old EV batteries wire them up and you can make anything with wheels move. Including really old tractors, pickup trucks, etc. Anything from the largest mining trucks to the smallest lawn mower can already be powered by batteries. And everything in between. With battery cost dropping, there are very few obstacles that prevent adoption left. Mostly import tariffs in the US.

Yes. But maybe not a 1:1 of current petroleum-powered equipment with an equivalent electric one? Say, crop dusting aircraft are not being replaced by electric powered crop dusting aircraft, but by (electric powered) crop dusting drones.

Could something similar happen for, say, tractors? A tractor is of course an extremely versatile tool, and as long as there's a human driving it there's a tendency towards ever bigger tractors in order to minimize labor/ha. But big tractors are already a bit too big and expensive for many not-huge farms, ground compaction is a problem with large weight etc. Could we see these replaced by a fleet of electrical drones (drones as in autonomous, not necessarily flying) rather than "just" an electrical tractor? Of course, there's a certain minimum power required to pull a plow etc., so maybe not? Of course, autonomous fleets etc. goes a bit against the idea of DIY-fixable. Or does it? A different skill-set than wrenching on an old tractor, sure.

>Buy some old EV batteries wire them up and you can make anything with wheels move. Including really old tractors, pickup trucks, etc. Anything from the largest mining trucks to the smallest lawn mower can already be powered by batteries. And everything in between. With battery cost dropping, there are very few obstacles that prevent adoption left. Mostly import tariffs in the US.

It's not even close to that easy though is it? I've wanted to convert a car to an EV and it seems really complex.