Slow drivers make impatient drivers pass in stupid places, which kills innocent drivers.
70km on the open road is dangerous! And if you can't drive at the posted speed limit, you should not be on the road, or you should have a support vehicle.
Also the law for learner bike riders that states you can't go over 70 in a 100 zone is ridiculous. I nearly took a guy out with my truck who was riding along at night
with an L plate doing 70 on SH1
Go with the flow and no one gets hurt i reckon