Sunday 3rd March, Southward car museum has an open day for $10, or $5 if you have an awesome cool car that you get to park on the green outside for people to admire. I go every year and it's great. Lots of beautiful cars for petrol heads to dribble over. There's music and food stalls outside plus entry to the museum itself, and more secret interesting stuff in sheds around the back you don't normally get to see.
I don't recommend scooting as its an hours drive up north, but its a great place to visit.