Earn points by avoiding the air strike missiles.
Once the missile targets turn red then they are fixed unless you brake or release the accelerator and then they can move.
You can brake and even stop if you don't think you can make it through a wave, but it will be classed as "Too Slow" so you will not score any points. You will keep your multiplier though.
After trying various trucks and cars for over an hour, I couldn't even get above second place on any of the Air Strike Events.
I then used the Cobretti GT RS and I was able to complete all Air Strike Events easily.