This is going to be a little random.
A brillant battery idea, but it's not mine: Swap the battery rather than charging it in place. Replaceable battery modules can be swapped out quickly and recharged at leisure. Charging stations can have the infrastructure in place to robotically swap batteries in about the time it takes to pump gas. GPS systems can be programmed to route to swapping stations with an available battery for your vehicle. With reliably present battery swapping stations, road trips of any length become possible. It doesn't take a large surplus of batteries to make this work out given the statistical variation - and charging your battery with 220V AC is a good default solution. Forget 110V. That's not going to work. You're going to need more current than your typical wall outlet will provide.
I'll just comment on the batteries issue. Hot-swapping batteries to speed up battery recharge times is unnecessary unless you insist on recharging from a standard household plug/voltage. Also, you should not run your electrical car until battery depletion. That means that most of the time you will be doing a top-up charge, going from about 20% to about 70% battery capacity, which is quicker.
Batteries need some improvement but they are not the only electricity storage solutions. Capacitor based systems may ultimately be the future direction.
I have personal reservations about hot-swappable batteries. If it is possible for someone to do at home, somebody will try it. The prospect of a fully/partially charged battery pack being accidentally discharged by a weekend tinkerer is frightening. Anything that can release that much energy that quickly should be left to experts.