Michael McCluskey collided with the lorry on the M5 near Gloucester just after 7:00am on 30 May. His Vauxhall was badly damaged in the crash, as the image tweeted by the Central Motorway Police Group (@CMPG) revealed.
It shows a shattered windscreen, crushed roof, caved-in side and broken headlight – although remarkably, the tyres remained intact and the car continued to run.
Rather than stopping, McCluskey continued north on the M5, not pulling over until near junction 5 – an hour after the crash.
Appearing at Cheltenham Magistrates Court, he pleaded guilty to the charge of dangerous driving. Police said McCluskey reached speeds of 90mph despite the perilous state of the Signum.
Thirty-year-old McCluskey, who was taken to hospital by police after being stopped, will be sentenced at Gloucester Crown Court on 21 August.