Don't know if anyone else has noticed this, but I pulled the liner out of my trunk the other day and I noticed a couple shielded boxes of electronics behind the storage hole (where a spare would go). Closer inspection revealed Motorola and Bluetooth logos, so I figured this must be the GPS+Cellphone+Bluetooth module for BMW Assist. What I thought is odd is that there is a sticker that specifies E60 rather than E90. I wonder if both cars (7er and 3er) use identical system integration modules, or if the E60 on the label has some other meaning.