Where do the mile roads in metro Detroit begin? And why do we have mile roads in the first place? WDET's Pat Batcheller answers those questions and explains what you need to know about mile roads in Southeast Michigan. Then, we connect the dots on why intersections on roads like Michigan Ave and Fort Street have such weird angles. Finally, we find out who John R really was. Have your own question about Detroit? Submit it at wdet.org/curious.