Luxury improvements

The car-buying public has spoken: Audi and Cadillac showed the largest increases in brand-perception among luxury sedans, based on a study by Kelley Blue Book's Marketing Research. Cadillac gained the most in terms of driving comfort, exterior styling, interior layout and design, interior roominess and cargo and trunk space, the company said. Audi jumped in seating capacity, luxuriousness, available options and prestige brand. "Both Cadillac and Audi have introduced new models and significant redesigns and ramped up their marketing efforts, " said Jack R. Nerad, executive market analyst for Kelley Blue Book.