Hi,
I've read a literature and saw "Station Wagon Bus" ... I don't know what does it mean,
It's a School bus, right? In very simple terms,a station wagon is a car with a lot of space at the back. A bus is, well, a bus. If I saw the term 'station wagon bus', in a context about schools and children, I might think it was a station wagon that was used to take children to school.
Other question is ... One character in this literature said "Whyncha come over this afternoon"
what's whyncha? It represents 'Why don't you . . . '. It's not correct writing, it's just a way of trying to write the way the person pronounced it in his spoken English.
Best wishes, Clive
Later edited to change 'Who don't you . . . ' to 'why don't you . . .'. Clive