How can it be the apocalypse without some Mad Max vehicles? Actually, I don't have too many of these, but I have lots of various modern or near-future vehicles I press into service. Here are the most post-apocalyptic of them!
The truck in front is an old Grenadier Miniatures vehicle I've had since high school. The gunner is a converted Mordheim mercenary. The rear vehicle is a toy from the pound store (came in a pack of five!), up-armoured with some bits from the versatile Platformer kit and various things from the bits box.
I ... may have a drawer full of toy cars and model kits I want to use to create vehicles for post-apocalyptic gaming.