diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/proto/Android.bp b/automotive/vehicle/2.0/default/impl/vhal_v2_0/proto/Android.bp
index 6754843..2eedecd 100644
--- a/automotive/vehicle/2.0/default/impl/vhal_v2_0/proto/Android.bp
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/proto/Android.bp
@@ -29,3 +29,64 @@
     ],
     srcs: ["VehicleHalProto.proto"]
 }
+
+cc_library_static {
+    name: "android.hardware.automotive.vehicle@2.0-grpc",
+    vendor: true,
+    include_dirs: [
+        "external/protobuf/src",
+    ],
+    generated_headers: [
+        "DefaultVehicleHalProtoStub_h",
+    ],
+    export_generated_headers: [
+        "DefaultVehicleHalProtoStub_h",
+    ],
+    generated_sources: [
+        "DefaultVehicleHalProtoStub_cc",
+    ],
+    shared_libs: [
+        "libgrpc++_unsecure",
+    ],
+    cflags: [
+        "-Wno-unused-parameter"
+    ],
+}
+
+genrule {
+    name: "DefaultVehicleHalProtoStub_h",
+    tools: [
+        "aprotoc",
+        "protoc-gen-grpc-cpp-plugin",
+    ],
+    cmd: "$(location aprotoc) -I$$(dirname $(in)) -Iexternal/protobuf/src --plugin=protoc-gen-grpc=$(location protoc-gen-grpc-cpp-plugin) $(in) --grpc_out=$(genDir) --cpp_out=$(genDir)",
+    srcs: [
+        "VehicleHalProto.proto",
+        "VehicleServer.proto",
+    ],
+    out: [
+        "VehicleHalProto.pb.h",
+        "VehicleHalProto.grpc.pb.h",
+        "VehicleServer.pb.h",
+        "VehicleServer.grpc.pb.h",
+    ],
+}
+
+genrule {
+    name: "DefaultVehicleHalProtoStub_cc",
+    tools: [
+        "aprotoc",
+        "protoc-gen-grpc-cpp-plugin",
+    ],
+    cmd: "$(location aprotoc) -I$$(dirname $(in)) -Iexternal/protobuf/src --plugin=protoc-gen-grpc=$(location protoc-gen-grpc-cpp-plugin) $(in) --grpc_out=$(genDir) --cpp_out=$(genDir)",
+    srcs: [
+        "VehicleHalProto.proto",
+        "VehicleServer.proto",
+    ],
+    out: [
+        "VehicleHalProto.pb.cc",
+        "VehicleHalProto.grpc.pb.cc",
+        "VehicleServer.pb.cc",
+        "VehicleServer.grpc.pb.cc",
+    ],
+}
diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/proto/VehicleHalProto.proto b/automotive/vehicle/2.0/default/impl/vhal_v2_0/proto/VehicleHalProto.proto
index 2ef64fb..04df5a8 100644
--- a/automotive/vehicle/2.0/default/impl/vhal_v2_0/proto/VehicleHalProto.proto
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/proto/VehicleHalProto.proto
@@ -15,7 +15,6 @@
  */
 
 syntax = "proto2";
-option optimize_for = LITE_RUNTIME;
 
 package emulator;
 
diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/proto/VehicleServer.proto b/automotive/vehicle/2.0/default/impl/vhal_v2_0/proto/VehicleServer.proto
new file mode 100644
index 0000000..7ce3c32
--- /dev/null
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/proto/VehicleServer.proto
@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+syntax = "proto2";
+
+package emulator;
+
+import "google/protobuf/empty.proto";
+import "VehicleHalProto.proto";
+
+// correspond to StatusCode defined in types.hal
+enum VehicleHalStatusCode {
+    OK                                  = 0;
+    TRY_AGAIN                           = 1;
+    INVALID_ARG                         = 2;
+    NOT_AVAILABLE                       = 3;
+    ACCESS_DENIED                       = 4;
+    INTERNAL_ERROR                      = 5;
+}
+
+message VehicleHalCallStatus {
+    required VehicleHalStatusCode status_code      = 1;
+}
+
+service VehicleServer {
+    rpc GetAllPropertyConfig(google.protobuf.Empty) returns (stream VehiclePropConfig) {}
+
+    // Change the property value of the vehicle
+    rpc SetProperty(VehiclePropValue) returns (VehicleHalCallStatus) {}
+
+    // Start a vehicle property value stream
+    rpc StartPropertyValuesStream(google.protobuf.Empty) returns (stream VehiclePropValue) {}
+}
+