Dude, it doesn't make you cool that you started drinking at 13. I grew up in a Euro household and I had a glass of wine/beer but I never was going out and getting smashed. Everything in moderation my man.
They'll never expect you to be dumb enough to drive drunk; since they just saw that you are driving, by process of elimination they will have to believe you aren't drunk.
why not just tell your parents that you drink? would they really be that mad? and why are you driving home after drinking anyway? crash out at the friends house or walk it if it isnt that far
i started drinking when i was real young too... vodka worked best since your breath won't smell like alcohol. just take it easy man... u dont wanna end up being a fat lazy drunk when your 30 (like some people i know).
Word, I live in the UK, I always had a glass of cider or wine or beer with my meal, I have never been paralytic, and I have never drunk "too much" I think if you show your parents your responsible with your drink, they'll be chill about you drinking, I know my mum was when I was under-age...
what does work a bit is polyolefine based polyurethanes, apparently hydroxyl-terminated polybutadiene (acrylonitrile) is the best one to use, but good luck synthesizing / finding that