Never been to Vietnam but I've been to Southeast Asia.
The traffic is f'ed up, almost everybody are on motorbikes. They don't even follow the traffic signal half the time. That's probably where the Asians can't drive stereotype comes from.
Don't know about BJs costing a buck but massages cost about $10. That's all I'mma say.
Vietnam is a little more advance though so it could be a bit higher.
It's a nice big country from what I know, similar to California in shape & size/area, so it'll depend on where you're at when looking for hotspots.
There are Vietnamese-American posters on this board, maybe they'll tell you more about that country.