LoadPlayerVehicle(playerid)
{
    new queryBuffer[128];
    mysql_format(cHandle, queryBuffer, sizeof(queryBuffer), "SELECT * FROM vehicles WHERE vOwner = '%s'", GetPlayerNameEx(playerid));
    mysql_tquery(cHandle, queryBuffer, "OnPlayerVehiclesLoaded", "i", playerid);
}

forward OnPlayerVehiclesLoaded(playerid);
public OnPlayerVehiclesLoaded(playerid)
{
    new rows = cache_get_row_count(cHandle);
    if(rows)
    {
        new cData[3], Float: vPos[4], vehicleid;
        for(new i = 0; i < rows; i++)
        {
            cData[0]    = cache_get_field_content_int(i, "model");
            cData[1]    = cache_get_field_content_int(i, "Color1");
            cData[2]    = cache_get_field_content_int(i, "Color2");
            vPos[0]     = cache_get_field_content_float(i, "Pos_X");
            vPos[1]     = cache_get_field_content_float(i, "Pos_Y");
            vPos[2]     = cache_get_field_content_float(i, "Pos_Z");
            vPos[3]     = cache_get_field_content_float(i, "Pos_A");

            if((vehicleid = CreateVehicle(cData[0], vPos[0], vPos[1], vPos[2], vPos[3], cData[1], cData[2], -1)) != INVALID_VEHICLE_ID)
            {
                [...]
            }
        }
    }
}