https://www.msn.com/en-gb/news/world...van/ar-BBIukbi

Most cars are designed to carry 5 adults.
Whilst I acknowledge most UK motorists are dangerously overweight and put a totally unnecessary burden on the NHS, even 5 of them weigh less than 1 tonne.
I can only assume this car was built for the US market where 5x800Kg occupants are common.