Can you have both bluetooth and airport card in computer

Apple has a couple of knowledge base articles that deal with the subject:

http://support.apple.com/kb/HT1365

http://support.apple.com/kb/TS1809

The second article specifically says that in the Macbook Air, using multiple Bluetooth devices can reduce the transfer rate of Airport networks. One of their suggestions is to use the 5 GHz 802.11 network instead of the 2.4 GHz network (an option I believe is only possible with the 802.11n Airport machines).

The first article mentions the possibility of Bluetooth/Airport interference without specifying computer models. But it offers the same kind of advice -- such as using the 5 GHz channel and reducing the number of active Bluetooth devices.