Hi,
I've rented only once previously with Sixt, and decided to rent an XCAR (BMW 5 Series, Mercedes-Benz E-Class, Cadillac XTS) for an extended stay in Los Angeles (30+days). I'm picking up the car at 4pm this Saturday (8/20). I'd like to get a Mercedes or BMW and I was wondering if the LAX location accepts requests for a specific car. Above all I DON'T want to get stuck with a Cadillac like I did last time--they're just not for me.

Thanks for any tips.