I used to smoke bongs while I drove to work...and on lunch...and on my way home.

being stoned wasn't hazardous, IMHO, but fumbling with a butane lighter (the kind that stays lit even if you drop it...like a welding torch) and a bong is definitely dangerous. so I usually pulled into a timmy's parking lot to burn, then continued on my merry way...I found it was easier to smoke a bong than a pipe or J tho. it only takes a second to light, then you can toke with one hand and steer with the other...

I've been a stoner for a few years now though, so I'm used to feeling high, and I know what to expect. I also know I'm not comfortable driving after a few drinks, or on mushrooms (oh god, never ever try to drive on mushrooms). so I guess to each his own...