. >> reporter: walt mountford is developing a giant mixed-use project called "city line." it's located adjacent to a dart rail station and two major highways in the suburb of richardson. >> we had a completely blank slate-- 186 acres of previously undeveloped land right at the heart of a very pedestrian- friendly light rail stop. and so, it allowed us to create an urban environment in the suburbs. everything is very walkable here. >> reporter: it's a $1.5 billion development which is still under construction. it will have nearly 4,000 rental units, a hotel, 28 restaurants, a whole foods supermarket and 4.5 million square feet of office space, including four buildings for about 8,000 state farm employees like adriuanna hughes, who no longer has to drive more than 60 miles a day. >> i was filling up two times a week and having to get a little more gas to carry me through the weekend to go to the mall and run errands. i don't have to do that. i have one tank of gas, and it lasts me throughout the week. >> reporter: mountford says the proximity to light rail makes employers mo