This period film on Zenith carbs has just come to light, toward the end an Inter can be seen with its engine cover up, this is the only Inter I have ever seen on period film! The car is also sign written with  "motor SNCAN 10 rue de spinning, Villeurbanne,"
 http://www.dailymotion.com/video/xfdz8z_visite-de-l-usine-des-carburateurs-zenith_news