Fat Dragon Games have released a 28mm modern city paper terrain set.
From their announcement:
CAPITAL CITY brings a visually stunning urban environment to your tabletop. Everything you need to create a dynamic city is included in this set, from streets and cars to buildings and all the accessories you’ve come to expect from FDG. Most files include user selectable graphic options, allowing you to customize your city your way. This set also includes support for 1″ grid, 1.5 inch grid (clix miniature games), no grid, and 1″ hexagons.