[KoftaBob]

I mean, what are the differentiators for gasoline-powered cars?

Off the top of my head: brand reputation, looks, reliability, quality/roominess/aesthetics of the interior, misc. features, fuel efficiency, and obviously price.

For electric vehicles, all those same things still apply, with fuel efficiency being replaced by the range/energy density of the battery and efficiency of the motors to get more range from that battery.