These are all very good reasons for not bringing out a mobile phone. There were well liked and established brands: Nokia, Motorola, Erickson, Blackberry. There was a glut at the cheaper end.

I have no idea if Apple are working on a car or not. I doubt they would revolutionise the car business any more than they revolutionised the phone business.

But for Apple to make a big dent in a sector that is highly technical but with significant brand and aesthetic factors? That doesn't strike me as being very far fetched at all.