That is lame, I was 18 in UK a very long time ago and we as my buddies and I decided we needed a designated driver.
Nobody told us to, we just wanted to be able to continue to got out in a car to pubs.
The kid is dumb and irresponsible DUI is NO joke and I knew it at 18almost 50 years ago. The trouble is in the US is has always been seen as no big deal, even today. The penalties are way less now in the USA than in the UK 50 years ago and it is not anything as socially unacceptable. I have ZERO sympathy