回複：題外話：有關於在加拿大學車的問題

The other answers are just partially correct. Actually
you can take the road test in the 5th year, and if
you past, you'll get G2 and it will be valid for
another 5 years. Note that you don't need to get
to G in such a case at the end of the 5th year.
Also, if you get G2 in the 2nd -- 4th year, you can
either do a G-test to get to G, or re-do another
G2 test and renew the G2 for another 5 years in 5th
year.
Check the ministry of transportation's web site,
it's clearly says so there.