Funnily, that's exactly what the early Tesla Semis do. They have a charger aggregator which takes multiple supercharging stalls to charge one truck.

The issue is, of course, not one of delivering the power, but rather that the battery chemistries we have today can't accept that much power without being damaged.

It is not only the cable from the station to the car, but also from the grid to the station. And so on.