tristan cleve shows us how. -- kris van cleave shows us how. >> uber!> dianne is just one of the many friends and d.c. maybe that is why they are trying out the corner store the district. it allows you to summon a rolling convenience store to your door. we waited five minutes for this to roll up, stocked with more than 100 products. >> icebreakers, gift bags. soaps. >> tell the driver what you want, and the order is immediately filled. moms,ot of stay-at-home people may have migraines through the day, or just need a snack. >> i'm excited because there are mornings you wake up and realize you are out of deodorant. what do you do? do you have time to run to the grocery store? probably not. >> uber calls the corner store concept a test they are running for a few weeks, trying to gauge the interest. this person does not love it. his corner store at 14th already took a hit when trader joe's opened a couple blocks down. this worries him. >> when it's hot, are you going out to buy something? other, it willhe keep people out. old business battle between and new