The Chevy Tahoe and Suburban -- as well as the similar GMC Yukon -- are extremely important to General Motors (NYSE:GM). The company dominates this highly profitable full-size SUV space with a 74% market share. Ford, with its Expedition and Lincoln Navigator twin, is a distant second place behind the GM fleet -- though it's widely expected to offer redesigned 2015 models as well. Meanwhile, Nissan (with its Armada), Toyota (the Sequoia), and others fight for the leftovers.

And so, GM's unveiling of the redesigned Tahoe and Suburban last week in New York was officially a Big Deal. Our roving reporter Rex Moore was at the event and, along with senior auto analyst John Rosevear, was generally impressed with the new vehicles.

In this segment of a multi-part video series, Rex goes straight to the designers and engineers for details on the refreshed vehicles. Today, he speaks with lead designer Bryan Priebe about integrating smartphones into the vehicle. The Chevrolet MyLink system greatly enhances Apple's iPhone with Siri Eyes Free, and there are other features inside the vehicles as well.