Because this question applies to ALL drugs, and is not directly related to their effects (well, except on judgement), I am moving it to Drug Culture. That way, more people will get to read these cautionary tales.
As for my own experience, I've never damaged my car or anybody else's while driving under the influence of marijuana or (meth)amphetamine, the only two drugs on which I am willing to drive (though now that I've quit stimulants, that list has been reduced to marijuana). In my younger, more foolish days there were two instances when I drove while coming up on psychedelics, once on mushrooms and once on acid. Though I didn't crash into anything, those were the only lessons I needed to show me that I should not try to drive after ingesting psychedliecs, even if I think I have enough time to get where I am going before I start to come up.
As for my own experience, I've never damaged my car or anybody else's while driving under the influence of marijuana or (meth)amphetamine, the only two drugs on which I am willing to drive (though now that I've quit stimulants, that list has been reduced to marijuana). In my younger, more foolish days there were two instances when I drove while coming up on psychedelics, once on mushrooms and once on acid. Though I didn't crash into anything, those were the only lessons I needed to show me that I should not try to drive after ingesting psychedliecs, even if I think I have enough time to get where I am going before I start to come up.