You probably know this anyway, but it seems to be loading the wrong textures. The square at the left of the radar is vehiclelights256, the letters telling you the time are replaced with xvehicleenv128, centre of radar is vehicleenvmap128. These textures are all from vehicle.txd in your \SA\models\generic folder.
SA:MP loads its own custom vehicle.txd so that could be the problem. Try running single player, or restarting the computer.