Well at least doesn’t have to worry about “suspension does not lower” and “charger covered in dirt “ or “cat hides under there for warmth” problems. Those are on top of the existing charging losses.
Poor cat...
Now I'm wondering how this thing would affect a cat sitting on it while the car is parked above.
The charger includes motion sensors and “foreign object detection”.
If a pet, person, or metal object gets between the pads, the system supposedly stops working so nothing overheats.
So, it might get a cat yelled at ^_^
Heh. I didn't mean it in a gruesome way :-) just saw that someone mentioned it has a sensor to shut it off. So assuming it works as designed a cat might like the nice warm pad to hang out on in the winter. Owner parks hoping to charge their car by morning, the pad charges for 10 min, stray cat notices car is back and hides in there for warmth, charger stop charging immediately, cat moves on, and next day the car is not charged and the owner can't leave for work. It's just not a failure mode a cable has to worry about.
The efficiency of a wired connection tends to be well-known and rather stable over time, yes.