Ribald

I was unable to get the texture to change either. However, if I change the stone arrow mesh to that of the flame arrow then the material changed to the radiated. Not sure why it was working for Gamida and not you or me. Stranger still that changing the mesh made it work. If it wasn't for the change working for Gamida I would think that hard-coded it to ignore material changes on the normal stick-able arrows.

I suspected the same thing with regards to vehicle speed. What I am noticing though, is that even with the higher speeds (15, 20), the muscle car is slower than the rest, even slower than the minibike (7, 10). If I had to guess, I would suspect that the mass of the car is set to be much higher than the other vehicles. Can't change those numbers in the XML as far as I know though, so can't really test it. One thing I forgot to ask in the first post is about the quality of the muscle car. Right now it is set to have 3 tiers. Is the idea that you are supposed to upgrade it on the workbench? That works, but the car itself doesn't give a quality rating nor is it hinted at anywhere in the game that I saw. In any case, pretty minor stuff, but it does make using the muscle car less attractive to use over the 4x4.

A couple issues with the muscle car. First, it is rather slow compared to other vehicles, maybe this is intended. Second, the turbo engine does not increase the speed of it. Neither does changing the speed or torque values in the xml. I can change the values to make it slower, however. Seems like it might be a value in the unity3d file causing it. I tested this rather crudely on a long stretch of road in a larger city. timing the various vehicles the 4x4 would make the length of the road in ~30 seconds, the motorcycle in ~32 seconds (should be slightly faster than 4x4 imo, but whatever), the minibike in ~38, and the muscle car in ~40 seconds. Also, the vehicle spikes mod does not seem to work. They vehicles do ~20 damage to zombies with or without the mod. Looking at the character stats screen while IN a vehicle shows a damage of 21, I'm not sure if that is actually accurate though. Changing the value in the xml does not change the damage either. Changing the operation type does nothing too. I do seem to recall TFP changing vehicle damage, perhaps they have it set to a fixed amount now?