New source found from dndbeyond.com

ddb_main/tools/js/Shared/components/ExtraRow/ExtraRow.tsx

@@ -7,6 +7,7 @@ import {
   Constants,
   Creature,
   ExtraManager,
+  VehicleManager,
 } from "@dndbeyond/character-rules-engine/es";
 
 import { NumberDisplay } from "~/components/NumberDisplay";
@@ -75,7 +76,7 @@ export const ExtraRow: FC<Props> = ({
       typeName = type;
     }
 
-    let description: string = `${size} ${typeName.toLowerCase()}`.trim();
+    let description: string = `${size} ${typeName}`.trim();
     if (description) {
       metaItems.push(description);
     }
@@ -164,12 +165,27 @@ export const ExtraRow: FC<Props> = ({
 
     const { data, label, showTooltip } = movementInfo;
 
+    let useMph = false;
+    const isVehicle = extra.isVehicle();
+    if (isVehicle) {
+      const vehicleData = extra.getExtraData() as VehicleManager;
+      const displayType = vehicleData?.getDisplayType();
+      const isElementalAirship =
+        displayType ===
+        Constants.VehicleConfigurationDisplayTypeEnum.ELEMENTAL_AIRSHIP;
+      useMph = isElementalAirship;
+    }
+
     let contentNode: React.ReactNode = null;
     if (data !== null) {
       contentNode = (
         <React.Fragment>
           <div className="ct-extra-row__speed-value">
-            <NumberDisplay type="distanceInFt" number={data.speed} />
+            <NumberDisplay
+              type="distanceInFt"
+              number={data.speed}
+              useMph={useMph}
+            />
             {showTooltip && renderAdditionalInfoTooltip()}
           </div>
           {data.movementId !== Constants.MovementTypeEnum.WALK && (