Unfortunately it appears to need a code fix.

The TDX's are handled in a slightly different way to IMGs.

bz_Image_LoadAsTexture( "[VEHICLES]\\c1eagle\\ui_assets\\c1eagle_driver" ) finds the tdx and creates the following names:
    mName: {mInternal_buffer=0x0041e144 "Data_Core\\Content\\Vehicles\\c1eagle\\ui_assets\\c1eagle_driver.tdx" }
    mResolvedName: {mInternal_buffer=0x0041e254 "C1Eagle\\ui_assets\\c1eagle_driver.tdx" }
    mAbsoluteName: {mInternal_buffer=0x0041e364 "CarMODgeddon\\Vehicles\\C1Eagle.ZAD\\ui_assets\\c1eagle_driver.tdx" }

PDLoadTex() is then passed mName (extension stripped) and mResolvedName, the latter of which is used in an bz_File_Open() that subsequently fails.