Amador Bustos has made a fortune, and built two radio empires, catering to the tastes of America's Spanish-speaking population. But the founder and chief executive of Sacramento's Bustos Media knows times are changing in Spanish-language radio.

Grupo Televisa said Wednesday that it wanted to sell its stake in Univision Communications and might break an agreement that restricts Televisa's expansion of U.S. programming.

The mood among investors, particularly within the venture community, has undergone a sea change in the past couple of years. Constant media attention surrounding global warming and hybrid vehicles has brought clean and green front and center because of its prodigious growth potential.

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The geographic dispersion of the U.S. Hispanic population continues. States with small Hispanic populations have shown the greatest growth in the last decade — with seven of the 10 fastest-growing states in the South.

2006 Hispanic Business 500 Certainly the Hispanic Business 500® companies have adjusted to the challenging times, keeping up their optimism and growing revenues at the same time. Cumulative revenues for the 500 rose to $34.82 billion in 2005, and overall the 500 companies posted their best revenue growth performance since l996.

2006 Hispanic Business 500 Auto dealerships find growth in Web-based services and marketing. All Star Auto Exchange in Tucson, Arizona (number 475 on the Hispanic Business 500) doesn't have the advertising budget of much larger dealers. But All Star does have a snazzy and easy-to-navigate Web site proclaiming, "Easy Application! Fast Approval! Drive Today!"