> - When you're tired, you can have a cup of coffee and wake up a bit and regain some of that focus. You can't drink a red bull and suddenly be way less high.

Actually, there are terpenes in cannabis that mitigate many of the confusing effects, which can be found in foods such as black peppercorns and pine nuts. Pliny the Elder wrote about this; see http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3165946/ So yes, there are ways to get "less high."

Not advocating that driving while high/texting/tired is a good idea, just trying to enlighten about some of the fascinating science behind Cannabis.