High-end luxury vehicles including the Bentley Mulsanne (just 13 miles per gallon combined), the Rolls Royce Phantom (14 mpg), the Mercedes-Benz Maybach S600 (15 mpg) and BMW 760Li (15 mpg) aren't helping.
Utilize the input text as a context reference, choose the right relationship between 'Rolls Royce Phantom' and 'BMW' from the options.
Options: parent organization, industry, chief executive officer, manufacturer