If Leonardo exchanges his position with Johnny, then what Leonardo having?

According to the data given in the question the arrangement is shown below: Since From (v), Neither Johnny nor Arnold is having Lamborghini. So, the only person left who could have Lamborghini is Tom. Therefore, Tom is having Lamborghini. Since From (ii), person who went to Sumatra is having Lamborghini. Therefore, Tom is having Lamborghini and went to Sumatra. Since From (i), Sylvester is neither went to Hawaii or Ko Tao and also from (iv) Sylvester does not went to Bali. Therefore, the only Island left for Sylvester is Santorini. From (iv), Arnolddo not went to Hawaii. Therefore, only Island left for Arnold is Bali. Now, only person left is Johnny and the only Island left is Hawaii. Therefore, Johnny went to Hawaii. The only car left for Johnny and Arnold is Aston Martin. Therefore, Johnny and Arnold are havingAston Martin.