He is talking about overlaid GPS waypoints, not a laser/radar-based
camera detector.  The two are quite different.  It cannot be possible
for a device which tells you information that is in the public domain
(i.e. the position of fixed speed cameras) to be illegal - not in a
stable democratic country, anyway.  The morality of a detector for
mobile cameras is open to debate.  Personally I like the idea, since I
don't like being criminalised when gangs of chavs, thugs and scum roam
the streets where *I* live committing crimes willy-nilly whilst the
police are out terrorising motorists doing 35 in a 30.  (I tink you
have to live in the UK and put up with the crime here before you can
pass judgment on this one!)  Perhaps if crime and thuggery was given
more attention by the government, we would be more likely to toe the
line, and forego the capital outlay on a detector.  As it is, it's open
season.

I won't enter into a debate about whether drink-driving is worse than
"speeding", except to say that the first is always bad, and the second
is often bad only when dictated by the State, and not common sense.
(There are clearly times when you don't need a politician or a copper
to tell you that excessive speed in some circumstances is stupid.)

But several GPS device manufacturers *are* stupid enough to make
devices with updated databases of fixed speed camera locations, and
they sell very well.  Naturally BMW won't do this from the factory, but
all it is is a table of waypoints...