New cars

 These 3 cars came from the local charity shop for about 10p each.  Though I'd initially disregarded them because they're pretty poor quality pressed (not die cast) body shells, I reconsidered and decided to splash out.

My thinking is that they'll make good grav-cars for a futuristic city.  The wheel arches aren't flared and the bodies just pop apart so the plastic wheels fall out.  Should be easy to fill the gaps with milliput or another epoxy putty then repaint and mount on a stumpy flying base to lift them 3 or 4mm off the ground.

Another advantage of being cheap and non-specific in terms of make, no-ones going to look at them and say "Oh, that's just a dodge charger with the wheels removed" or whatever. Plus if I screw this up completely, it's no great loss!