Also, many places here in
the US have enacted laws requiring drivers to not hold the phone to their
ear while driving, in order to keep the hands free to operate the car.
Regardless of the reason, mounting the cell phone on the dash is probably a
good idea.
Here in Austria we also have a law which forbids the use of mobile phones
without a "hands free" device while driving (although also phoning with the
hands free device distracts quite a lot). Up to now I have used a device which
is connected to the phone via a cable adapter and which has a little loudspeaker
for that purpose. But especially the Nokia "snap on" connector on my latest
6610i phone has caused contact problems over problems which could not be solved
easily. So I have bought a bluetooth phone and will buy the
http://www.elta.de/de/artikel.asp?Artikel=7540&x=66&y=48&Artikel1=7540 which has
a bluetooth dongle to communicate with a phone.
It really frightens me when driving beside big trucks and see the drivers hold
their phone with one hand and steering with only the other one. Unfortunately
that is not really seldom.
As for any effect on the car's electronics, I think most of the circuits
would be adaquately shielded by surrounding metal to protect them from the
relatively low-power signal from a cell phone, even at it's highest output
level.
I had a 745 up to now, no electronics under the dashboard. When the phone is
active one can hear it at least in the radio.
Regards
Viktor