Show THE MOTOR QUIZ lillow how many con tou to answer Q want part of the miles of ronda roads in the IT 17 S A have boon been sur faced 7 ans about one sixth 0 i want alint la Is the total highway alif mileage ag e of the world and what part of tills this Is in the united states ans miles half of which Is in the united states santes of tile the improved roads more than half are in the united santes Q ilow doest doea the mileage of travelable roads compare with the railroad mileage ans the mileage of travel tible roads ia 18 tow four times greater |