I was able to get a fairly good deal on reserving a Alamo premium class car out of SFO in May.

I was wondering, does anyone know what cars are offered in this class? I saw online it said Buick Regal or similar, so I am wondering what the similar would be?

Also, this will be my first time renting a car, so I was wondering are you usually
assigned a specific car, or can you pick out your own?

Thanks!