something that's been studied more recently is the impact that vehicle weight has on ground-level pollution. because the lithium batteries used for electric cars are heavy, and because higher range per charge requires more batteries, electric vehicles are much heavier than ICE-powered vehicles of the same size. that, in turn, increases tire wear, road-surface wear, brake wear, and particulate resuspension, all of which are components of ground-level air pollution.
this isn't, for the most part, pollution that has a global impact as does greenhouse pollution. its effects are local but very negative. these are the sorts of pollutants that decrease life expectancy, and electric cars cause more of them than modern ICE cars (old and poorly maintained ICE cars are pretty bad all around).
in this way, switching to electric power trades one sort of pollution for another. in many cases, it will reduce carbon emissions, but in nearly all cases (switching from a large ICE vehicle to a small electric one might be an exception) it will increase localized ground-level pollution.
this is especially true of electric buses. that veers somewhat afield from individual consumer choices, but it's one that I think about a lot spending a fair amount of time in cities on a bike. diesel and diesel hybrid buses are loud and smelly, have brake compressors that release at high decibels without regard for who might be right next to them, and weigh upwards of 20,000 pounds. electric buses are much quieter and (I believe) have regenerative brakes that don't use a compressor. but they're also much, much heavier (and very expensive). at that size, they're not only creating much more ground-level pollution, they're also causing expensive damage to streets and roads far above and beyond what their diesel counterparts cause.
I guess to me, switching from ICEs to electric motors is somewhat akin to switching from bloodletting to leaches. there might be some advantages and disadvantages at the margins, but the big picture remains the same: regardless of how it's done, removing someone's blood isn't good medicine. regardless of how it's powered, using an automobile to move people around isn't a good transportation choice.
(I do want to reiterate that sometimes a car or truck or bus truly is the right tool for the job. in those cases, I guess you'll have to choose which sort of mischief is most tolerable, but I'm not convinced it makes much difference.)