> A second option is more slow chargers installed places your car spends a lot of time parked, like offices or transit stations if you park and ride.

I don't think this will ever happen. It's the worst case in most every sense. You're talking thousands of chargers, for most parking structures, to solve a problem that's mostly about current battery tech/infrastructure. When battery tech is ready for general use, this won't be needed.

Battery tech is for general use. The median and mean usage of a car in the US is 40 miles per day. A 300 mile battery gets you a week's worth of driving between charges (~7.5 days). That's comparable to a median ICE car that gets 300 miles on a tank, with the subtle distinction of needing a 30-45 minute fast charge versus a 5-10 minute refill. But that's still a once a week "problem" with useful mitigations such as it is dangerous and illegal in most states (just poorly enforced in many as well) to leave a car unattended while refueling with gas, but electricity is far safer and multitasking is easier and more convenient while fast charging. (That fact that most fast chargers aren't interesting destinations with enough things walkably nearby is a different problem to solve, that the market should be rather good at solving eventually.)

But that's all still treating EV charging in the old world ICE model which everyone is familiar. When people are talking about wanting more chargers everywhere a car may be parked, like offices or transit stations and other parking structures, that isn't a need, that's a market opportunity unavailable to ICE. You can't put a gas pump in every parking space, but you sure can put an ordinary electric outlet. We can distribute the charging "problem" of a car far more easily than the current centralizing forces of gas logistics. It's an amenity that anyone who owns a parking lot or garage can offer to encourage walkability to nearby businesses and/or homes. It's a possible revenue source for other parking lots or garages that love low margin business models like electricity metering and/or think they have a captive enough audience to charge whatever margins they like, to make the bottom line grow.

We don't need those things to happen. We've driven gas engines for enough decades without that. We want those things to happen. We expect market forces to eventually deliver those things, as soon as the market better figures out what EV charging disrupts in parking lot planning and operations/maintenance. You can't expect your gas car to have more gas when you come back to it in a parking lot, but an EV can have a slightly higher charge almost anywhere it is parked for a while and that's a game changer that will slowly spread as the market finds the fun (and profit or marketing opportunity) in it.

Battery tech is ready for general use. Over 20% of cars being sold in California are EVs now, and over 90% in Norway.

Slow chargers are pretty low-tech devices, just a 208V-277V circuit with a device that handles switching, ground fault check, and potentially payment. These are going to be cheaper and easier to install and maintain than fast chargers, and I think adding them to workplaces is going to be easier than covering individual apartments.

That certainly won't cover all needs, which is why I listed other alternatives as well. The answer will be a blend of these solutions where each makes sense.

> talking thousands of chargers, for most parking structures

My home has an average of 10 chargers per room; I don't think it's really been a big driver of its cost.

This is already being done in Finland.

Shopping malls have parking with literal hundreds of chargers.

Even my local grocery store has 6 Level 2 chargers and 4 level 1 chargers.

Hell, the McDonald's has four 350kW chargers. Modern cars charge faster than you can order a Big Mac and shove it down your throat =)

The solution is to have Level 2 and Level 3 charging _everywhere_. Then you don't need to have massive 100kW+ batteries in cars, because you can get a bit of a charge every time you park.

The first big leap people moving from ICE to EV have to get over is that unlike ICE cars, EVs don't "need" to be charged to full every time. You plug in, do your stuff, unplug and move on. Very rarely does one need to "go charge" during normal daily life, that's only for road trips.