I just got back from the service department with an LCI E90 328i. They also had pre-LCI E90 328s, pre-LCI E90 335s, 128s, 135s, Mini Coopers, and X6s available for loan. What you get depends on availability and their willingness to oblige your requests.
The X6 is $60/day. Everything else is on the house.
'09 E92 M3: Space Gray, Black, Carbon Leather | ZTP 2MK ZPP 2MT 6FL | link 1 / link 2
Mods: M Performance exhaust | ZCP retrofit | Euro airbox | GTS DCT flash | JPN 240 ECU flash | Euro LCI taillights | CRT lip | OEM alarm retrofit | Space Gray bumper plugs | BMW Performance: Mk. II spoiler / Mk. II non-electronic steering wheel / mirror caps / front grilles / side gills / intake louvers / emblem