Caravans do not have to be small in Australia

Beentherefixedthat wrote:

A really good way to judge this is the commercial truck lines. Your average class 8 tractor (the ones hauling 53 foot trailers or semi's) weighs in at only about 14k to 16k lbs. Yet it hauls a GCVW of 80,000lbs or about a 40k payload depending on the type of trailer and how much it weighs.

Big trucks can gross a lot more than 80k.
That 80k limit was put in place for various reasons, one of which is to protect roads and bridges from deteriorating from heavyweight vehicles.