BMW will be the first auto manufacturer to sell CarPlay as a separate option on its vehicles rather than including it in a package. Unlike other manufacturers, who either include CarPlay as a standard feature or bundle it into a package, BMW will be offering it as a standalone $300 option throughout its entire model line, even up to the top end. Even customers buying the $138,000 Alpina B7 xDrive will need to spend the extra $300 to add the CarPlay…