Plugins are the worst of both worlds. All the costs to build a low emission engine and most of the battery costs and even heavier.That really is a fact.
I could currently use a hybrid. It's not entirely clear those will disappear. Software has always been part of my work and modelling vehicles has figured for a while. One option on a hybrid is a motor driving a generator. Pass on cost effectiveness etc but an EV can avoid the need for a gearbox and those are never that efficient and result in a significant power loss. I have also worked on EV controllers, no gear box so with the correct type of control a conventional gearbox isn't needed.
Early work that lacked suitable batteries but ok for feasibility and some usage but 1 tonne of lead acid batteries doesn't exactly help.
The i3 range extender version was canned in Europe a while back as it was such a poor seller.
At first glance they seem great, it's only when you look harder you see how flawed they are.