Time to get the claim moving forward - see a solicitor
I would do the following
Completely ignore the terms "warranty"
Write a letter to Tesla Australia
Include the following in the letter
You allege Car is not of acceptable quality, not fit for purpose and does not match the description of the advertising. (These are word for word your consumer guarantees under the law).
You believe the Tesla with respect to VINnumber XXXXXXXX is not meeting its Consumer Guarantee obligations provided for under the Competition and Consumer Act
Dont mention" warranty" because the warranty from a legislative point of view in Australia is additional to your consumer guarantees. Consumer guarantees applies regardless of the warranty. A warranty cannot exclude a consumer guarantee
Then put in a claim in whatever tribunal your solicitor advises.
Going nuclear isn't the best first option. As for spending $200k on legal fees, not sure how someone arrived at that.
Repair, replace, refund, cancel
Businesses must fix minor problems with products or services by at least giving a free repair. When consumers buy products or services that have a major problem they have certain rights.
www.accc.gov.au