Some years back 2004 I think, when Maggie Thatcher crossed the seas to visit us in our capacity as Eu President, Audi supplied a fleet of executive cars, I cant remember the model but something similar to the A7
They had sunroofs which were also solar panels and they would run the A/C while the car was parked insuring it was either cool or warm when the guests returned
Surely something similar could be done for charging PHEV or BEV's?