So this is Jobbers response:
Part of it is for security and to make sure payments are collect via PCI compliance.
PCI compliance is all about collecting, storing and transmitting card payments via a secured connection. this has got nothing to do with the feature request I have.
It is merely allowing the invoice status to be updated and a payment line item to be added to the Jobber invoice. No transmitting of any car details what so ever. I have replied to Jobber a few times and now they are just plainly ignoring me. that is both the API and Support team.
Well done and professional Jobber!