I think if you look at e.g. Model 3 Performance it's not quite so hopeless. 80kwh packed into an EV roughly the same size, weight and performance as a contemporary BMW M3. Even with today's technology (0.2kwh/kg, 3-4 miles/kwh) a Miata-sized 250hp, 2500lb, 200 mile EPA EV is possible. Whether that would be a compelling driving experience and anybody would buy such a thing is another question.