@Bakersdozen - I'm envious of you being able to try hibachi style cooking at home! I'm a new fan and would be cooking up a storm most weekends I think.
Last week I went to a Korean restaurant for the first time and they had a similar kind of BBQ grill at the table. I don't know that it's the exact same as the hibachis described here, but the concept sounds very similar.
Ours was in the center of the table and worked from very hot coals. There was a kind of air suction pipe above it, to take away the fumes and smoke I guess. We made plenty of the latter, as it's hard to remember to turn the meat in time!
I'm seriously considering swopping my gas BBQ that's sat out in the yard for one of these. The food tasted so much more flavorful than any grilled meat I've had before.