I think I posted this in the older forum but right now I cant quite recall...
Nevertheless, let's spill the beans.
What do you think about an upgrade that allows you more mechanism space in a car? I mean 007's cars (the most recent ones with pierce brosnan) have a bunch of gadgets installed on them, however, I'm not quite sure if vehicle weapons can be implemented as miniaturized gear or as per a different rule, since they eat a lot of space (especially missile launchers) in a car. And let's say that the BMW from Tomorrow Never Dies is the most beefed up car from the Bond Series I have ever seen.
My option would be an upgrade called "Radicaly Custom" which would add hollow spaces in lieu of defense and/or damage save or acceleration/turning — if you are actualy taking off important engine parts — penalties to the car's statistics so the vehicle would have maybe an additional mechanism (or weapon point cost) per point of penalty. I'm not really the best person to design these rules and that's why I'm throwing this to you forumites.