Tesla has recorded its eighth straight month of year-on-year sales decline in Australia.In November, Tesla delivered 2540 vehicles to Australian customers, a 35.5% drop compared to the same month last year.Despite the decline, Tesla remains the best-selling EV maker in Australia, with 34,754 deliveries made between January and November.The Model Y is Tesla's most popular vehicle, accounting for more than two-thirds of Tesla's total deliveries in November.