I worked for them 5 years ago... First sign of trouble was when they hanged me the per diem form in orientation and stated it was mandatory....
If you're talking about Marten Transport out of Wisconsin... Run away from them, they are the worst I've ever worked for.
High voltage in Knoxville is really good... Stay away from Pit bull in Lincoln, Nebraska, at all costs.
No, there's not enough distance between them to work effectively... one properly set up will work fine.