I remember this concept being the cover story in an issue of Popular Science back in the 1970s -- a "gas station" where you exchange electrolytes. philipkglass

I remember this concept being the cover story in an issue of Popular Science back in the 1970s -- a "gas station" where you exchange electrolytes. philipkglass' comment brings up one risk: what happens if the batteries are breached in a severe collision?