diff --git a/automotive/vehicle/2.0/types.hal b/automotive/vehicle/2.0/types.hal
index 661c3d4..e36468a 100644
--- a/automotive/vehicle/2.0/types.hal
+++ b/automotive/vehicle/2.0/types.hal
@@ -1120,9 +1120,9 @@
      *
      * Distance units are defined in VehicleUnit.
      * VehiclePropConfig.configArray is used to indicate the supported distance display units.
-     * For example: configArray[0] = 0x21 // METER
-     *              configArray[1] = 0x23 // KILOMETER
-     *              configArray[2] = 0x24 // MILE
+     * For example: configArray[0] = METER
+     *              configArray[1] = KILOMETER
+     *              configArray[2] = MILE
      * @change_mode VehiclePropertyChangeMode:ON_CHANGE
      * @access VehiclePropertyAccess:READ_WRITE
      * @data_enum VehicleUnit
@@ -1141,8 +1141,8 @@
      *
      * VehiclePropConfig.configArray is used to indicate the supported fuel volume display units.
      * Volume units are defined in VehicleUnit.
-     * For example: configArray[0] = 0x41 // LITER
-     *              configArray[1] = 0x42 // GALLON
+     * For example: configArray[0] = LITER
+     *              configArray[1] = GALLON
      * @change_mode VehiclePropertyChangeMode:ON_CHANGE
      * @access VehiclePropertyAccess:READ_WRITE
      * @data_enum VehicleUnit
@@ -1161,9 +1161,9 @@
      *
      * VehiclePropConfig.configArray is used to indicate the supported pressure display units.
      * Pressure units are defined in VehicleUnit.
-     * For example: configArray[0] = 0x70 // KILOPASCAL
-     *              configArray[1] = 0x71 // PSI
-     *              configArray[2] = 0x72 // BAR
+     * For example: configArray[0] = KILOPASCAL
+     *              configArray[1] = PSI
+     *              configArray[2] = BAR
      * @change_mode VehiclePropertyChangeMode:ON_CHANGE
      * @access VehiclePropertyAccess:READ_WRITE
      * @data_enum VehicleUnit
@@ -1182,9 +1182,9 @@
      *
      * VehiclePropConfig.configArray is used to indicate the supported electrical energy units.
      * Electrical energy units are defined in VehicleUnit.
-     * For example: configArray[0] = 0x60 // watt-hours
-     *              configArray[1] = 0x64 // ampere-hours
-     *              configArray[2] = 0x65 // kilowatt-hours
+     * For example: configArray[0] = WATT_HOUR
+     *              configArray[1] = AMPERE_HOURS
+     *              configArray[2] = KILOWATT_HOUR
      * @change_mode VehiclePropertyChangeMode:ON_CHANGE
      * @access VehiclePropertyAccess:READ_WRITE
      * @data_enum VehicleUnit
@@ -1212,6 +1212,25 @@
         | VehicleArea:GLOBAL),
 
     /**
+     * Speed units for display
+     *
+     * Indicates type of units the car is using to display speed to user. Eg. m/s, km/h, or mph.
+     *
+     * VehiclePropConfig.configArray is used to indicate the supported speed display units.
+     * Pressure units are defined in VehicleUnit.
+     * For example: configArray[0] = METER_PER_SEC
+     *              configArray[1] = MILES_PER_HOUR
+     *              configArray[2] = KILOMETERS_PER_HOUR
+     * @change_mode VehiclePropertyChangeMode:ON_CHANGE
+     * @access VehiclePropertyAccess:READ_WRITE
+     */
+    VEHICLE_SPEED_DISPLAY_UNITS = (
+        0x0605
+        | VehiclePropertyGroup:SYSTEM
+        | VehiclePropertyType:INT32
+        | VehicleArea:GLOBAL),
+
+    /**
      * Outside temperature
      *
      * @change_mode VehiclePropertyChangeMode:CONTINUOUS
@@ -2586,42 +2605,45 @@
  * Units used for int or float type with no attached enum types.
  */
 enum VehicleUnit : int32_t {
-    SHOULD_NOT_USE = 0x000,
+    SHOULD_NOT_USE      = 0x000,
 
-    METER_PER_SEC  = 0x01,
-    RPM            = 0x02,
-    HERTZ          = 0x03,
-    PERCENTILE     = 0x10,
-    MILLIMETER     = 0x20,
-    METER          = 0x21,
-    KILOMETER      = 0x23,
-    MILE           = 0x24,
-    CELSIUS        = 0x30,
-    FAHRENHEIT     = 0x31,
-    KELVIN         = 0x32,
-    MILLILITER     = 0x40,
-    LITER          = 0x41,
+    METER_PER_SEC       = 0x01,
+    RPM                 = 0x02,
+    HERTZ               = 0x03,
+    PERCENTILE          = 0x10,
+    MILLIMETER          = 0x20,
+    METER               = 0x21,
+    KILOMETER           = 0x23,
+    MILE                = 0x24,
+    CELSIUS             = 0x30,
+    FAHRENHEIT          = 0x31,
+    KELVIN              = 0x32,
+    MILLILITER          = 0x40,
+    LITER               = 0x41,
 
     /** deprecated. Use US_GALLON instead. */
-    GALLON         = 0x42,
-    US_GALLON      = 0x42,
-    IMPERIAL_GALLON= 0x43,
-    NANO_SECS      = 0x50,
-    SECS           = 0x53,
-    YEAR           = 0x59,
+    GALLON              = 0x42,
+    US_GALLON           = 0x42,
+    IMPERIAL_GALLON     = 0x43,
+    NANO_SECS           = 0x50,
+    SECS                = 0x53,
+    YEAR                = 0x59,
 
     // Electrical Units
-    WATT_HOUR      = 0x60,
-    MILLIAMPERE    = 0x61,
-    MILLIVOLT      = 0x62,
-    MILLIWATTS     = 0x63,
-    AMPERE_HOURS   = 0x64,
-    KILOWATT_HOUR  = 0x65,
+    WATT_HOUR           = 0x60,
+    MILLIAMPERE         = 0x61,
+    MILLIVOLT           = 0x62,
+    MILLIWATTS          = 0x63,
+    AMPERE_HOURS        = 0x64,
+    KILOWATT_HOUR       = 0x65,
 
-    KILOPASCAL     = 0x70,
-    PSI            = 0x71,
-    BAR            = 0x72,
-    DEGREES        = 0x80,
+    KILOPASCAL          = 0x70,
+    PSI                 = 0x71,
+    BAR                 = 0x72,
+    DEGREES             = 0x80,
+
+    MILES_PER_HOUR      = 0x90,
+    KILOMETERS_PER_HOUR = 0x91,
 };
 
 /**