The Motorola DynaTAC was made commercially available in 1983 and not very useful considering the lack of coverage infrastructure. Within 30 years we went from 30min of talk time and 8h standby through hours of talk time and weeks of standby to days of talk time and a day of usage, not to mention a whole spectrum of form factors and features.
And nobody, especially the incumbents, could predict the final shape the devices would take, sometimes to their demise(like in the case of Nokia).
The Mitsubishi i-MiEV was slow, expensive and small, with little range.
The Tesla Model 3 costs roughly the same (comparing to the 2011 MSRP for the Mitsubishi) adjusted for inflation, but is much better in every aspect.
That's less than 15 years of development. Who knows what will happen by 2035? Maybe we'll ditch lithium in favour of sodium, just like cobalt stopped being neccesary? Maybe the battery manufacturer Amprius will get acquired by a car company and scale the production of its 500Wh/kg batteries well beyond the planned 5GWh/yr? Maybe we'll have slow chargers attached to every streetlamp?
Norway is largely there regarding transitioning, despite having a cold climate. Took less than 15 years and their grid didn't collapse. Sounds like something the rest of the wolrd is capable of doing eventually.