London had electric taxis in 1897
they could take them back to the depot and exchange batteries in half an hour
thats 124 years of development
Indeed, but humping some lead acid batteries into a vehicle is a vastly different proposition from a Tesla battery pack. Plus the taxi's were never ranging that far from the depot.
Like most of us I remember the electric milk floats, apart from the fact they are battery powered they bear no resemblance to a passenger EV, the development isn't similar.
Electric drive motors are absolutely fine, better than an internal combustion engine in most ways, the problem is how to fuel and refuel them effectively