We had a delivery of aluminium plate at work this week, and I was somewhat surprised to see an estate car pull up. Aparently the lorry had broken down and they decided it would be too expensive to hire a van until it was fixed. I don't know what the stuff in the back weighed, but it was heavy enough that we needed a forklift to get it out.
While chatting to the driver about how much they put in a car he told me that if you put half a ton on the roof rack of an astra estate it can pop the back window out -and they put that on the roofrack because the back was already full!!
The moral of this is to be careful who you buy a secondhand estate car from.
Regards
Kevin