00100 SOME RANDOM USEFUL FACTS 00200 40,000 miles interstate highway, 100,000 county and state, 00300 3,000,000 surfaced 00400 00500 11x10↑9 cost per yr from accidents. 00600 If everyone had $4K per yr, then 19% increase in cars. 00700 Robert Hemmes, Urban Mass Transportation, Office of Research