Easy is relative. I recently bought a used bicycle whose owner switched to electric. He said he initially looked into a conversion, but the quote he got was in

Easy is relative. I recently bought a used bicycle whose owner switched to electric. He said he initially looked into a conversion, but the quote he got was in the 1500-2000 range which was pretty much the same cost of the same model just electric. So it was a no-brainer to get a new one. Now, you can get solid conversion kits for under a 1000, and it's a bike so it's much simpler than a car, and therefore actually kind of easy, but what the bike shop wanted was to make money for their time and they of course take the responsibility that it actually works correctly and all of this costs money. And you can do it yourself if you can, but most people wouldn't bother for a bike, let alone a car. There's a whole bunch of reasons why I think this is not very realistic. But of course people can try and succeed if they want and are able to, no harm there.