Speeding, a hypothetical

[flappist]

This is a hypothetical based on a not uncommon occurrence on the roads in Australia.

You are driving on a regional arterial dual lane (as in 1 lane in each direction) road in a line of vehicles.
If front of you are 3 4WDs towing caravans.
Behind you are 3 average medium to large passenger cars.
The speed limit is 100.
You are all doing 80 as the 4WDs are just dawdling along and have been doing so for the past 200km except for overtaking zones where they always speed up and then slow down again when the road narrows.

Ahead is an overtaking zone, the last one for 30km, and after that a lot of sections of windy road with steep inclines where the 4WDs will get down to 50 or 60 km/h.

As you enter the overtaking zone the 4WDs accelerate to 100.
There is now a second lane for you to overtake if you wish to but you will need to get to 120 to get past all 3 or 140 to get past with enough space for those behind you to have a chance to get past as well.

Do you:

Just sit behind them as they are doing the speed limit and allow any behind you to pass.

Move to the right to overtake but just sit beside the 3rd 4WD as it is now doing 100 and then drop back at the other end of the zone preventing others overtaking.

Overtake all 3 at the minimum possible speed so that you get past but no one else does in case there is a speed camera or radar.

Overtake at 140 slowing back to 100 at the other end of the zone to get clear and allow as many others as possible past.

This poll is about how YOU react to this situation not how you think others should react or legalities or an assessment of the 4WD or car drivers.

Just to preempt the wowsers who are going to post that this is a very contrived or unlikely scenario, it is not uncommon at all on regional roads in my state (QLD) and interestingly the rego plates on the 4WDs almost always have blue or black characters not maroon.