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.
There is elegant simplicity in the Avista's surfaces, which speak to the purity of the car's performance, and a timeless beauty that's a hallmark of Buick design, says Bryan Nesbitt, executive director of global Buick design âand the man charged with injecting the brand with new vigor.