A serial arsonist torched ten cars and a campervan with a family asleep inside just weeks after leaving custody for a similar rampage.
Toby Pierce caused £65,000 worth of destruction sending vehicles up in flames around Ramsgate, Kent in March.
Pierce was arrested in possession of a lighter as fires raged around him and, on Friday, was handed three years and nine months at Canterbury Crown Court on Friday.
The 20-year-old was locked up just a year before for arson attacks on five vehicles.
Prosecutor Edmund Fowler told how Jade Williams discovered a series of blazes and banged on Kieran Williams’ converted horse box, where his family were sleeping.
Mr Williams fought back the blaze with a fire extinguisher, but when he went to attend to other cars, some exploded – including a Vauxhall Astra.
Pierce pleaded guilty to ten counts of arson and one count of attempted arson at an early opportunity.