I hope people refrain from blasting dexter_stayne for what he wrote... I mean the point of this board is harm minimisation, ripping into someone for sharing an experience like that isn't going to achieve anything so just think before you reply.
That aside, something I feel very strongly about is people driving while they are peaking. Think about the experience of being out at a club or party and just what you're going through mentally when you're peaking.
Physiologically; think about your visual acuity, depth perception, ability to judge speed, reaction time, hearing, attention span and so on. All of these make for really dangerous driving.
The problem is that, just like alcohol, ecstacy impairs judgement and when you're on it, you figure it's okay, or that you can't be bothered waiting until your pill wears off. I'm sure other drugs have effects that result in even worse driving, but driving while peaking has to be one of the most dangerous things people can do. Please think before you do.