The nerfing of the shield pretty much ruined it. Better just allow the convoy shield as an option for one of the three cars at the same. The other can use EMP or rocket hailstorm or whatever combination.
In rebirth, the calculation for "your NUMBER will be larger x (figure) if you reset" is completely off. I start with 120x only to wind up with being on par an hour later. Something's amiss here
that was the intro screen, and your save takes a sec to load in.