Once known for the Pontiac Aztek flop, General Motors Co.’s small and midsize SUV designers have transformed the fleet from “AI-generated blobs” into the automaker’s No. 2 asset.

The rise of small SUVs comes amid GM and other American automakers’ retreat from the sedan market and rising Asian dominance of that sector. GM’s new entry-level vehicle lineup includes Chevrolet’s Trax and Equinox, the Buick Envista and GMC’s Terrain — all small-to-midsize SUVs.

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