I think this should settle it. I painted a van chrome to test, just to have a large, flat, reflective surface area. Using the same terms you used (casting versus reflections) just to make it clear.
In the first shot, the van is reflecting the light sources of the two cars behind it. The top white lights are from the track stands, the bottom yellow lights are from cars. The reflections are clearly being rendered on the middle of the van, the reflector at the top, and the reflectors in the reverse lights. The casting lights are visible on the Ford badge, the area where the plates would be, and the road of course.
EDIT: Also, bear in mind that the casting isn't quite as visible on the van in these shots since chrome is less rough and will diffuse less light.
The second shot is the exact same shot with all headlights switched off. Open them in two tabs and flick between, you can see where each reflection would've been and where each light cast would've been.
This shot has light reflections visible (the Hilux's rear lights on the van), but not much casting going on as it's not fully dark + the Hilux seems to have rather dim lights.
Hope that's clear enough, I was starting to struggle to find proof until I had the idea of making a hideous chrome van