Ever notice the HP ratings on shop vacuums?

I saw one that said 6 HP yet it had a 16 gauge power cord on it.

Since 1 HP = 746 watts, that cord was passing 4476 watts or 37.3 amps.

WTF? How could that be?
It seems as though someone is stretching the HP rating a bit.

Didn't the small gas engine companies get busted for lying about their HP?