dont show speed below zero

selfdrive/ui/paint.cc

@@ -306,7 +306,7 @@ static void ui_draw_vision_maxspeed(UIState *s) {
 }
 
 static void ui_draw_vision_speed(UIState *s) {
-  const float speed = s->scene.controls_state.getVEgo() * (s->is_metric ? 3.6 : 2.2369363);
+  const float speed = std::max(0.0, s->scene.controls_state.getVEgo() * (s->is_metric ? 3.6 : 2.2369363));
   const std::string speed_str = std::to_string((int)std::nearbyint(speed));
   nvgTextAlign(s->vg, NVG_ALIGN_CENTER | NVG_ALIGN_BASELINE);
   ui_draw_text(s->vg, s->scene.viz_rect.centerX(), 240, speed_str.c_str(), 96 * 2.5, COLOR_WHITE, s->font_sans_bold);