Car Rental Weirdness

Checking the calendar reveals that we are departing ONE WEEK FROM TODAY for Italy.  We're not completely ready for this trip.  I've been printing out hotel reservations, airline stuff and etc.  I like the old-fashioned paper backups of documents.  Hertz sent us a three page car reservation confirmation, with this text on page three.  I find this paragraph incomprehensible.  Is this something that allows them to cancel your reservation, should they not like the look of you when you arrive for your car?  I think it's very odd.
 

This reservation is based on information you have provided

Hertz, including information regarding your current

geographic location.  Hertz reserves the right to demand

proof of what you have told us.  In particular, if you have

indicated that you are located outside your country of

residence,  you may, at the time of rental, be required to

prove where you were when this reservation was made,

through evidence such as an air or rail carrier ticket

receipt, a hotel bill or a utility bill addressed to you at

the location where you say you were.  Failure to provide

such substantiation may invalidate the rates you have been

quoted, or invalidate the entire reservation.  Providing

false information to Hertz in connection with this

reservation would also breach your rental agreement and

could violate the law.

We're taking two months of receipts from the RV park, to show where we were when we called, but how strange is that?