The Sonic comes on the heels of the new Chevy Cruze and Buick Regal, both of which have been well received.

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ABC's Buick Regal NBA Countdown pregame show will preview the action, with host Stuart Scott, Hall of Famer Magic Johnson and analysts Jon Barry and Michael Wilbon, at 8:30 p.m.

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The proof is in the cars: the Chevy Cruze and Equinox, the Buick Lacrosse and Regal, the GMC Terrain, the Cadillac CTS and SRX.

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It has done quite well in overseas markets, especially in China, where GM compacts such as Buick Excelle, Regal and Chevrolet Lova have surpassed competitors.

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Retail sales (as opposed to sales to government fleets and rental car agencies, which are typically less profitable) rose 70% in February, led by strong demand for its newest models, including the Chevrolet Cruze and Equinox and the Buick Lacrosse and Regal.

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Then last year came the Regal, a familiar Buick name but in a totally unfamiliar package.

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Buick continues its rebuilding effort with the sporty new Regal mid-sized sedan.

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General Motors Co. will make another attempt to get Buick to appeal to younger buyers with freshened up versions of the Regal midsize sports sedan and the LaCrosse large luxury car.

WSJ: GM in next phase of hoped for Buick revival