Cadillac Escalade

Cadillac Escalade isn't a big selling vehicle these days -- it's a symbol of a time when gas prices were not so high.

Interestingly, overall sales of GM full-size utilities, which include the Chevrolet Suburban and Tahoe, GMC Yukon and Yukon XL, rose 50% during the month. But Escalade sales fell by 9.8% to 1,279.

"A lot of large SUVs are going down the same path as gas prices rise and consumers move from larger SUVS to smaller CUVs," Toprak said.

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