Budget Car Hire at Sanford.

Hi folks I wonder if you can help ? I bookrd through US CAR HIRE a Full Size car with a free upgrade to a Premium car , to be picked up on 30th May at Budget at Sanford.
My question is does anybody know what car's in the respective class are generally issued by Budget at this location.
The reason I an asking is that I am taking my recently widowed father , and intend doing a good bit of touring about, up to New Orleans etc.
Thus my wife is going to do some of the driving.
Budget quotes a Premium Class as a Mercury Grand Marquis , which I believe is the same size as a Lincoln Town Car.
We had a Lincoln from Budget 2 year's ago , so my wife know's what size it is.
She says she could not drive anything of a similar size.
Any advice or assistance would be appreciated.
Thanks in anticipation.[8D]