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The Cadillac Escalade is celebrating 20 years on the road. Over the course of four generations, the big SUV has become one of the definitive models in the American premium SUV segment. In those years, the company has also capitalized on the vehicle's success by spinning off variants like the EXT pickup and long-wheelbase ESV.

Now that the Escalade is nearly old enough to celebrate its birthday with a glass of champagne, let's take a look back to check out some of the highlights from the model's two decades on the road. Click the arrow above to see some of what makes Caddy's biggest, most luxurious SUV such a powerful force on the market.

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