Who Will Become the Starbucks of Pot?

Handful of startups want to be America's favorite marijuana brand

During a typical Fourth of July weekend, 1500 Esperanza St., a whitewashed deco warehouse in the Boyle Heights district of East Los Angeles, is deserted. But this year, a line snakes down the broken sidewalk out front and wraps around the bend of Union Pacific Avenue, as 4,000 people suffer the searing heat for an event called the California Heritage Market.