Keep driving and maintain your independence but don't offer lifts. Your friends are being cheeky. If anyone turned the radio or heater on in my car while I was driving I'd be livid and they would be told to desist.
My problem is that I have got a bit rusty as I have let my DH drive everywhere as he is now at home all the time after being made redundant. This means that when I do drive he makes askance remarks about the quality of my driving. And that's a bit of a cheek too - of which I have informed him.
Recommendations please for thorn- and nettle-proof gauntlets – if possible vegan


