At 3.35am on Wednesday (26) one crew from St Neots was called to a fire on The Common in St Neots.
Firefighters arrived to find a car on fire in a field. Wearing breathing apparatus they extinguished the fire using a hose reel and returned to their station by 4.50am.
The cause of the fire was deliberate. Anyone with information should contact police by visiting www.cambs.police.uk to submit an online report or call Crimestoppers on 0800 555111