Possible titles

Hobotopia

The amazing world of hobos

Mavis in Hoboland or Mavis in Hobotopia or Mavis in Hobohemia

Hobopia

Hobos bizarre adventure

Ludacris and ostentatious magic of hobos

There’s no place like hobo

The Westbound

Mavis and the Westbound

Journey to the Westbound 

Life on the Rails

Legend of Mavis; breath of the hobos

Hobotopolis

Something hobo this way comes

Hobos and the Westbound

Curious misadventures of Mavis and the westbound

Hobo punch out

Junkyard hobos

The Last Hobo

Mavis the RoadKid

The Sound of Hobos

The Call of the Road

Hobos the Gathering

Hobotale 

Mavis and the Westbound: a hobo tale

O hobo where art thou?
Tales of the Rails
There's nobo like showbo