but why tho

cereal/custom.capnp

@@ -369,6 +369,7 @@ struct CarControlSP @0xa5cd762cd951a455 {
   leadOne @2 :LeadData;
   leadTwo @3 :LeadData;
   intelligentCruiseButtonManagement @4 :IntelligentCruiseButtonManagement;
+  speed @5 :Float32;
 
   struct Param {
     key @0 :Text;

sunnypilot/navd/navigationd.py

@@ -25,7 +25,7 @@ class Navigationd:
     self.mapbox = MapboxIntegration()
     self.nav_instructions = NavigationInstructions()
 
-    self.sm = messaging.SubMaster(['carState', 'liveLocationKalman'])
+    self.sm = messaging.SubMaster(['carControlSP', 'liveLocationKalman'])
     self.pm = messaging.PubMaster(['navigationd'])
     self.rk = Ratekeeper(3) # 3 Hz
 
@@ -82,7 +82,7 @@ class Navigationd:
     nav_data: dict = {}
     if self.allow_navigation and self.last_position is not None:
       if progress := self.nav_instructions.get_route_progress(self.last_position.latitude, self.last_position.longitude):
-        v_ego = max(self.sm['carState'].vEgo, 0.)
+        v_ego = float(max(self.sm['carControlSP'].speed, 0.0))
         nav_data['upcoming_turn'] = self.nav_instructions.get_upcoming_turn_from_progress(progress, self.last_position.latitude,
                                                                                           self.last_position.longitude, v_ego)
         nav_data['current_speed_limit'] = self.nav_instructions.get_current_speed_limit_from_progress(progress, self.is_metric)

sunnypilot/selfdrive/controls/controlsd_ext.py

@@ -72,6 +72,8 @@ class ControlsExt:
 
     CC_SP.intelligentCruiseButtonManagement = sm['selfdriveStateSP'].intelligentCruiseButtonManagement
 
+    CC_SP.speed = sm['carState'].vEgo
+
     return CC_SP
 
   @staticmethod