Man arrested over '172mph drive'
A motorist has been arrested on suspicion of driving at 172mph on a rural road.
The 33-year-old man was detained by police who had been using a speed gun on a bridge over the A420 near Abingdon, Oxfordshire, on Saturday.
The man has been released on police bail until 17 February.
Helphire, a car lease firm in Abingdon, said an employee who had "borrowed" a £98,000 Porsche 911 Turbo without permission had since resigned.
http://news.bbc.co.uk/1/hi/england/oxfordshire/6312673.stm
Out of interest, what the guns calibrated too?