I have not heard anything about this falling apart.
The ASRF - Australian Street Rod Federation Victoria - has had for many years registration and permits. The 'SR' plate often referred to as 'Street Rod' registration in fact is 'Special Registration' has existed for years.
This was under the control of Con M. in Victoria who held the plates and the check process close to 'his heart' working for registration authorities.
The ASRF have a pre '48 register and this is what is referred too. The current permit scheme in the pipe is either for 45 days or 90 days. It runs in blocks of 24 hours.
An interested person joins an automotive club and that club then signs off on the vehicle for the permit scheme.
The owner has a log book and must fill it out prior to moving the vehicle - again a 24 hour block - This log book must be fully completed prior to moving the vehicle.
If apprehended driving the vehicle without the log book completed the driver faces a fine for unregistered vehicle. The automotive club may also face action.
The quality and interest in the sport of those involved I feel would not see it fall apart.