Really depends on the carrier, for the most part not much, most head for Knoxville, Chattanooga or Louisville, I have gotten lucky in Portland TN a few times.
Gotta be lucky for sure, I bad decision and your broke. Wrong carrier, broke, pick the wrong van, broke, take the long wrong load, broke... Crap I just talked myself out of expediting!
Nope they say parts no longer available to fix this POS so as they die the get replaced by a new and improved tracking dog.. Which they don't have yet. When I get mine I think I'll name it spot!