[Leftism is Mentally Deranged]

Will use too much electricity. Will not be energy-efficient. Only good if you are not paying for the electricity, such as at work, at an airport, etc.

[DB]

If you have to transmit a watt for something that needs 10mW that isn't unreasonable even though is is only 1% efficient.

A nice use would be to keep a rarely used car or truck charged. So when you do need it isn't dead and you don't have to remember to drive it every few weeks.

[DB]

I'd bet the bigger problem is fears, real or imagined, that the high power radio waves in close proximity will cause cancer or other illness.

[HarmlessLovableFuzzball]

That's correct. As far as efficiency goes it's terribly inefficient. That's why its viable only for small amounts of power where efficiency is not the overriding concern.