Australia’s transition to electric vehicles is taking a big leap forward on Friday with the first deliveries of the Model Y electric crossover, the bigger sister of the best-selling Model 3 sedan. The Tesla Model 3 has accounted for the bulk of Australia’s relatively slow pace of EV adoption with more than half of the 45,000 EVs delivered to date, but the combined sales of the Model 3 and the Model Y is expected to push beyond 50,000 by the end of this year.