What car(s) do you prefer when driving when doing the average speed cameras? I have been trying to do them with the Agera RS 2017 Koenigsegg but find it too hard to keep it stable at top speeds, especially on dirt road.
I think I just used Agera RS for most speed cameras. For the speed zones on dirt, I used a mixture of stuff but found a 1973 Range Rover pretty decent.
I put dirt tires and rally suspension on my Agera RS. Works like a charm. 
MC12 FE, I’ve done a top 100 and multiple top 1000s with it after tuning. Definitely worth the 6 million cr plus perk points for the 300S to get one into your garage if that’s your thing. The Elise GT1 is quick too.