Depending on which permit you get, you're restricted to driving the car either 45 or 90 days of the year and you can't use the car for business purposes like taking payment to drive folks to a wedding for example. You should also bring the car along to car club meets a few times a year as well. Come to cars coffee donuts on the 15th and have a chat to some TCCA folks, it's enjoyable to be a part of it all even if you don't have a car where you're utilising the club rego. There's motorkhana's and other social events throughout the year.