diff --git a/src/components/Event/EventCarpools.tsx b/src/components/Event/EventCarpools.tsx
index 0dd2a1f..a08e170 100644
--- a/src/components/Event/EventCarpools.tsx
+++ b/src/components/Event/EventCarpools.tsx
@@ -112,10 +112,14 @@ export default function Carpools() {
 		setHasCarpool(alreadyInCarpool);
 	}, [alreadyInCarpool, setHasCarpool]);
 
-	const createEmptyCarpool = useCallback(() => {
+	const createCarpoolCallback = useCallback(() => {
 		setCreationStatus('pending');
 
-		createCarpool({ name: me.name + "'s Carpool", eventId: event.id })
+		createCarpool({
+			name: me.name + "'s Carpool",
+			eventId: event.id,
+			invitedUserIds: tentativeInvites.toArray(),
+		})
 			.then(({ id }) => {
 				setCreatedCarpoolId(id);
 				setCreationStatus('completed');
@@ -123,7 +127,7 @@ export default function Carpools() {
 			.catch(() => {
 				setCreationStatus('errored');
 			});
-	}, [event.id, me.name]);
+	}, [event.id, me.name, tentativeInvites]);
 
 	const tentativeInviteNames = useMemo(() => {
 		if (!signups) return [];
@@ -146,7 +150,7 @@ export default function Carpools() {
 				<b>You have invited these people to carpool with you:</b>
 				{tentativeInviteNames.join(',')}
 				<UIButton
-					onClick={createEmptyCarpool}
+					onClick={createCarpoolCallback}
 					style={{ backgroundColor: lightgrey }}
 				>
 					{creationStatus === null
@@ -162,7 +166,7 @@ export default function Carpools() {
 			<>
 				<span>Available to drive?</span>
 				<UIButton
-					onClick={createEmptyCarpool}
+					onClick={createCarpoolCallback}
 					style={{ backgroundColor: lightgrey }}
 				>
 					{creationStatus === null
diff --git a/src/components/api.ts b/src/components/api.ts
index 61fd027..ac09a49 100644
--- a/src/components/api.ts
+++ b/src/components/api.ts
@@ -175,11 +175,13 @@ export async function getCarpool(id: number): Promise<ICarpool> {
 export async function createCarpool({
 	eventId,
 	name,
+	invitedUserIds,
 }: {
 	eventId: number;
 	name: string;
+	invitedUserIds: number[];
 }): Promise<{ id: number }> {
-	return await post('/carpools/', { eventId, name });
+	return await post('/carpools/', { eventId, name, invitedUserIds });
 }
 
 export async function sendCarpoolInvite(carpoolId: number, userId: number) {