2 740il's
one is the luxury package, PDC, heated seats, Chrome etc,
and ones the Sport package, Rims, Auto adjusting suspension, DIFF, etc.
My dad drives the luxury one and i drive the sport one.
For example audi does it this way
http://blog.caranddriver.com/audi-now-tells-drivers-when-traffic-lights-will-turn-green/
The German car brand launched the new feature earlier this month in Las Vegas. It counts down the time remaining until traffic lights turn green. Displayed on both the instrument cluster and the head-up display, the countdown clock provides real-time wait predictions for drivers interested in remaining attentive behind the wheel. So far, the feature has very limited distribution. Currently, it only works at traffic lights in southern Nevada and is limited to subscribers to the Audi Connect Prime service, which costs $199 for six months’ worth of access to dozens of connected features.
BMW will do it the same , and i believe both will also have predictive data where they see how long cars are at a light and determine it via that away.