It's easily done in today's cars, When the engines are quiet and there's no road noise it;s surprising how quick speed rises un-noticed. I have recently had one of the old style speed camera detectors installed. Purely for the speed warning feature. Automatically works out speed for given road and tells you via colour screen and audible warning if exceeding limit.
Only cost £25, could potentially save points and licence.
Got it off the bay....
http://www.ukspeedtraps.co.uk/novusalpha.htm
The meets are for any Lexus owners John, The parts for the sc430 are rare second hand,you could try e-bay. Or try Andy on here...
http://www.lexusownersclub.co.uk/forum/forum/150-discounted-lexus-parts-mail-order/
Starting next year at any meets i and the wife organize....
It is the owners responsibility to cover their number plates, if they do not wish them to be visible on the forum.
Thanks for your past and future support.
Ian and Heather.