im sorry but thats crap it seems half odf this country cant drive anyhow as in theory whilst n the motorway you should neber have to brake other than when instructed to do so by the emergency services and from what ive seen it is the slower drivers braking more frequently because they seem to be miles away and not reading the road correctly eg get themselves blocked in by a lorry so pull out into somebodies way when had they judged correctly all of about 20 secs earlier they could have done so without causing someone else to slow. not onl this but people seem to forget that you should be in the left hand lane at all times other than when overtaking or passing a junction (to allow the traffic to merge freely).
this was proven to me on my way to gaydon yes ok i wasnt exactly dawdling but you have 3 empty lanes so there is some idiot in the middle lane doing 60
.
so whilst im thoroughly against any device that limits speed be it to a max speed, a minimum speed or both with half the idiots on our roads it might actually be a good idea. as would be a compulsory retest after a certain time period.
edit: forgot to say i agree with fenton i do concentrate a lot better at higher speeds partly as im enjoying it. i get bored at slower speeds so the mind starts wondering and i make mistakes.