Edison Motors is in the process of making
a retrofit kit to convert old pickup trucks to their diesel-electric platform.
This I find pretty exciting as it will be much more environmentally friendly to recycle an old truck over manufacturing a new disposable electric. Plus it uses modular components that are easy to service and replace and you can use mass produced parts for the original truck chassis. They're currently in the process of finding shops who will partner to handle the refurbishing of trucks. They think that the cost of the kit will be "33%-50% of the cost of a new truck" whish is disappointing vague as I don't know what they are considering the cost of a new truck, but if one of their partners focuses on finding and refurbishing trucks with good frames but dead engines, that could be a decent supply of trucks at a reasonable price.
If this does well then it's reasonable to assume they will eventually offer kits to convert medium duty SUVs and even cars.