The consumer car sales industry right now is very unApple like. Think of how many components in a car are shared and standardized, and how many must be this way due to various regulations. Apple using off-the-shelf tires, for example, seems very unApple like to me. Also, unless Tesla succeeds at taking down the dealerships, I doubt Apple would be willing to start franchised dealers for their cars. Overall, I think there is a lot in that industry that is unApple like as it is, and thus Apple wouldn't get into it at that level. Plus, there's more money in developing the tech and working with partners.
I'm a mechanic.
You mentioned 2 important aspects of building a car. Parts and Regulations. On the part side there isn't any difference between sourcing seats and tires for your cars and sourcing cpus and camers for your smartphone. Likewise the regulation side is very similar as well (in America it's FCC for smartphones and DOT for cars).
You are correct that the dealership issue needs to be addressed and that is an issue.
Franchising? Apple does not franchise Apple stores so I can't imagine it would want to start franchsing dealerships.
Yes. IMO product lines like the Apple Watch are mistakes. Smartcars are the future tho. Electric Vehicles and Self-Driving cars will be the next big leap, like the iPod to iPhone leap. If Apple doesn't position itself in that market then it'll fall behind hard in terms of innovation.Does Apple really need to make a car? I mean, it already feels like Apple is starting to spread itself a bit too thin trying to everything under the sun. They need to take some steps back and improve their existing products (especially iOS and OS X).