I have never done any of that stuff but I passed my test 2 months ago so I still drive to the letter of the law, hands in the 10 and 2 position, speed perfect, signals consistent etc. It is pretty amazing how few people drive within the law actually. To take dd to school, I go through a 20mph area, then a 30mph, then a 40, then national speed limit (60 in this case). Very rarely is the person in front of me not pulling away from when I'm doing the speed limit bang on and the person behind me is usually on my tail. I usually get overtaken in the 30mph zone and the overtaker zooms off. 20mph is nearly always ignored ime, 30 people do at least 35-40 and as soon as the national speed limit signs are visible in the distance, people speed up so they're doing 60 as they hit them, 65-70 I'd guess within seconds of passing them. The pedestrian crossings, schools, traffic lights and roundabouts aren't given due care by at least 50% of drivers I reckon. I see so many near misses, people cut up, gesticulating and honking horns/flashing lights.
The other problem is that even if you know it's illegal and you get a hands free set, I don't think you're safe. I won't go in the car with MIL as she has a hands free ear thing and generally it goes like this:
"HANG ON, HANG ON, ARE YOU COMING THROUGH? I CAN'T HEAR YOU. WAIT, IT HASN'T CONNECTED"
"WAIT. ARE YOU THERE? CAN YOU HEAR ME? Oh you're there now, I can hear you. Hang on, the radio's still loud, let me turn it off"
"What? OMG!"