Anger is high after thousands of customers in Kent and Sussex have experienced days of water chaos.
Police say the crash happened early in the morning and has left one man in hospital.
The class of 1966 from Loose Primary School reunite with their 86-year-old former teacher.
Loose Road will be shut until 1 June while essential gas mains works take place
The Stribbling-Williams family in Loose, Kent, say they are delighted to have Rodney back home.
The carriage will become a community cafe, to be staffed by pupils of Five Acre Wood school.
Five Acre Wood school has been granted permission for the cafe, which will be staffed by pupils.
The driver, a man in his 70s, was pronounced dead at the scene, Kent Police say.
South East Water says it is "continuing to restore water" for some affected customers.
