Yeah, that sounds like a glitch, maybe try redownloading it. Or you try unpacking it (mods menu, click on the mod, "unpack"). Unpack the zip, open the folder then ("burnside_hovercar_bernd"), open the vehicles folder in there, rename the next folder from hoverside to burnside, open that folder and delete everything exept the .dae file and the headlights jbeam and the hoods jbeam. Now go back and zip the vehicles folder again, drop that zip in your mods folder. Or wait until tomorrow, I'll set it up .