There's a special moment in the life of every billionaire when you realize that everyone else is trying to kill you and steal from you. And when the time comes, you want a vehicle built exclusively to cater to that paranoid delusion. Enter the Nightshark, where you can sit in perfect comfort behind tinted, sniper-proof glass as the filthy hordes press against your armored hull, then pull the trigger on the dual machine guns and relax as the…