Today-I-Learned that the Apollo astronauts had to pay for their own bed while going to The Moon. "they earned eight dollars a day, minus a fee for a bed on the spacecraft"
I don't see anything in there about mileage in the space vehicle, only on the ground. The oldest IRS rate I could find is from 1980: 22¢/mile. So for 205,000 miles the reimbursement would be $45,100. Or $138,724.09 in today's money.
(Yes, I know the mileage isn't reimbursable because government transportation was provided.)
