Comment by breve

CAR! Not bus. Apples vs Oranges.

Also, that "efficiency" measurement is not overall Pout/Pin. It's merely measure of charging speed and they do touch on that mentioning the lack of a "break-out box" etc. to determine the actual numbers.

One can absolutely achieve the same charging speed with induction charging, but with a much higher power input and at a greatly reduced vehicle efficiency due to the much higher on-vehicle mass dedicated to charging the battery.

This is also a bit of rigged game as they're using the oldest wired-charging infrastructure against the latest wireless. They do touch on that. The older wired standard has a much lower power-factor duty-cycle.

That said, it, otherwise, was a good test as they also took into consideration ambient temperature and battery heater.

This type of design (polyphase) is inherently even harder to align to achieve that level of efficiency, and misalignment throws the efficiency downward even faster than a simple coil. Wish I could link the research but it is behind a paywall. But a simple search on scopus and the like should suffice.

Of course, you could have some driver aid informing them how to better align themselves. But still, you will always waste energy in practice, and at the scale of automobiles out there it becomes unreasonable, no?