CT stands for Counter-terrorism in the US government. CT became very famous after the September 11, 2001 attack on US soil.
Ct after a street name = court.
Conneticut.
Court
Dick gallent
cat scan
ct scan
Computer Tomography
There are only three US states which begin with "C" California = CA Colorado = CO and Connecticut = CT
I think it is illegal.
Corner Kicks Taken!
Depending on where it is, it can stand for Court or Connecticut.
The only connection I can make is "Office of Management and Budget" for the US Government. Perhaps the car rental was negotiated by that agency of the US government.