I just bought a 2001 Z3 and am generally thrilled with the car. I would
like to add some newer technology to the radio, though... I have the
'business CD' radio.

I'd prefer to keep the factory radio, or to replace it with another
factory radio. Are there any 'good' options for adding:
- an iPod (without using an FM transmitter)
- bluetooth cellular interface--there's a sticker that says the car is
pre-wired for a BMW cell phone--even if it's not very modern & doesn't
help get to a bluetooth interface, I'd like to know what this was &
whether they're still available...
- satellite radio
- ideally, all three?

Thanks,
Heath