Maybe. The construction aspect of what you propose with "parking lot" charging would be mind boggling. I could just imagine how many of the charging pedestals would get ran over!That's not really the point though. DC fast charging certainly makes sense but probably won't be the dominant form of public or semi-public charging in the future.
Where I see them it's rarely any kind of new construction like building a gas station. Tesla almost always uses existing parking lots and prefers to place them in otherwise low traffic parts of those lots. And the same goes for for most of the charging stations I see.
What's likely going to be the dominant way is slower charging at places where people will be parked for a while. Malls, movie theaters (although that's an interesting case if it's only 3 hours), restaurants, and especially hotels. Amusement parks are also a really good use case.
I disagree about your fast charging point, in public. Irrespondsible people will forget to charge their vehicle 100%. And slow charging might not be the best idea in the evening hours when everyone is home.
Very in-depth subject for sure.
I think diesel electric hybrid is the way to go myself.