It’s a radio-based weather forecast for sea conditions - accompanied by quite a bit of jargon and regional names that might well be indeciphable to your average British person. Doesn’t play any kind of role in my daily life.
Not a clue.
I don’t have a front garden; it’s paved. So I suppose “let people park on it”.
They’re supposed to be reasonably good cars for what they do nowadays. But no, not for me - they’re family cars.