Using the Canadian postal code system as an example, the top level's binding concept is the postal district, and consists of 18 objects (letters). The next level down is the zone, where the objects are the digits 0â9. This is an example of an overlapping hierarchy, because each of these 10 objects has 18 parents.
The refreshed 2014 Buick Regal GS can now be had with all-wheel drive, though the added grip does come at the expense of a few horsepower. We already sampled the 2014 Regal GS and walked away mostly impressed, but now itâs time to verify how the sedanâs powertrain changes affect its performance numbers.
Read the full 2014 Buick Regal Turbo AWD First Test HERE. The Haldex-based, on-demand all-wheel-drive system can send up to 95 percent of the engineâs power to the rear wheels. Selecting between the various drive modes, Sport or GS, slightly changes the behavior of the rear differential, along with steering effort. With that in mind, the 2014 Regal GS with all-wheel drive needed 26 seconds to complete our figure-eight course, compared to 25.9 seconds for the front-drive, manual tranny car. Speaking of which, the six-speed automatic is the only gearbox available for the all-wheel-drive variant.