70km/h in 100km/h = accident?

[OzJavelin]

On way to work this morning came up behind two cars following a 180B doing 70km/h in 100km/h zone. First car behind (VR Commode) rounded him up first opportunity and went around .. bit too close to oncoming cars for my liking, but got thru OK. This left 180B, followed by 90s Rodeo, followed by me (SV8), followed by 80s Honda Accord

At the next passing opportunity, I checked Accord behind me, indicated, pulled out and punched the SV8. The guy in the Rodeo decided to pull out just as I approached the side of his ute. When I saw him move, I hit the brakes (I wasn't half way up his side), but the guy in the Accord behind me was so far up my clacker he almost hit me as I braked. Anyway the Rodeo driver realised I was beside him, weaved back in, so off I went .. with the Accord driver caning hell out of it to pass me too ..

All in all a bit scarey. Could have been 4-car pileup because:
1. Someone in a clapped out 180B won't do 100km/h in that speed zone on a dry, straight road.
2. Someone in a Rodeo won't look in rear vision mirrors before changing lanes
3. Someone in a Accord won't leave enough room between them and the car infront
...
4. Someone(?!) in an SV8 likes to punch the accelerator to pass people, who may not be aware he is one the move ..