Uh... Speed in a can? Yes I've made its acquaintance, during my raver era. Same old story from me. (You might pick up a theme if you read enough of my posts.) Chug 3 of them in a row. Work real hard to keep it down. Get all of the effects of speed without having to say you're doing speed!
I drank a few during my cross country move this summer. God they're horrid. But they keep the tired away and your unblinking eyes on the road.