I am fairly new to be looking at EVs but I am an engineer so have a pretty good idea how stuff works. But I just watched the Mustang Mach E charging video linked in the other thread and it raises a question. The presenter said that EVs have their chargers built into the vehicle and that the things most people call chargers are actually EVSE's. So my question is if the chargers are built into the vehicle what does a level 2 EVSE actually do? Why can't one just plug a 240V cable directly to the car? Do these devices somehow communicate with the vehicle to vary current to accomplish the desired charge profile? That would then mean that the "charger" in the car lacks that function?