Our family (Anglo-Belgian) regularly used the BAF service Southend to Ostend and I can clearly remember (early 1970s) watching 3 or 4 cars being loaded on and then us sitting in the cabin behind - presume on a Carvair. I can even remember horses neighing once durinig the (often very bumpy) flight across the Channel. Fond memories! We stopped using the route around 1975 because it was something like £12 return by then and we couldn't afford it!