Unlike as in some other countries, the 18th birthday is more important than the 21st birthday. A final exam is taken after you've turned 18 before you get your licence. However you may not drive on weekend nights and are only allowed to have one passenger. I think this car is called Pulsar or Astro in Australsia. I once took this car for a test drive onto Germany's famous Autobahn .
Belgian roads are bad and sometimes even worse.
When you drive from Germany into Belgium, you'll immediately notice the difference in the quality of the roads. However driving on highways at night is nicer in Belgium. The Belgian motorways are lit all night long. Strange but true. Australia is so much brighter.