Why not develop an axel with an integrated motor? It’d be easily scaled to any vehicle with a solid rear axle. Fill the engine bay with batteries… It seems like an easy approach to get a widely applicable EV conversion kit. Offer a few widths and diameter axles… Is it bad to have the motor in an unsprung position?I see hub motors, so I think not. I guess air conditioning would be another thing.
Or prop shaft hybrid kits, with an inline motor and a shortened driveshaft to the rear axle.
For that matter, a motor/differential assembly that used cv shafts to fit whatever the application is would be fairly easy.
I figure replacing an axle would be the simplest approach. I don’t know about inline motors and all that.