We have both vehicles & the caravan with the same insurance company...........
In June 2009 a week before we were due to go away, i had parked my truck up & gone into the doctors .........
When i returned a car had run down a adjacent hill ( driver got out & forgot to put the handbrake on ) & into the driver side front door & damaged the door pillar & rear door........( it required a new side & both doors )
The accident happened at about 16.30 & by just after 6pm my truck had been collected & taken to the garage ..........
The accident happened on a Thursday afternoon & by Saturday morning the insurance company had provided us with a like for like vehicle with a new towbar fitted so we could tow the van & go on holiday.....
So you do get what you pay for.
As said tell them that you have a towbar fitted & check what will be covered.