Trouble is still the people. Every day I see drivers holding a phone to their ear in newer cars that have bluetooth capability. They just never bothered to pair the thing up.

There's really no technological excuse as you say; I bought a Jabra Tour for $50 at Costco a couple years ago for my ancient 4runner. Works very well as a BT speakerphone and activates Siri via a single button press for voice-dial or whatever.