Steve Blair and Sam Liles, corporate America is quite skimpy on the "PCS" move issue (I think it boils down to they feeling if you want the job bad enough you'll DITY). While one actually can get "moved" in the traditional service sense (I'm one for three) there are often some interesting rules:

Lodging: They paid for the room but not the taxes on the room (so I made every effort to stay at bases between CA and SC).

Expense reimbursement: In addition to the room rate, I also received "per diem" which was at the government rate per where we stayed each night. The best part was that my total "reimbursement" for my expenses incurred was viewed by the IRS as "income."

I never once during a TAD got a rental car authorized, even when unable to get billiting and had to stay in hotels off base; however, during TDYs under the auspicies of the USAF I did get a Udrive.