The original Mk.1 Cortina, heavily modified by Lotus engineers at Ford's Advanced Vehicle facility at Boreham in Essex featured an A-frame located rear axle, which didn't quite work, as it tore up the centre mounting point. However, the 1558cc twin OHC head conversion and overboredFord 1500 engine, worked a treat and ended up in the Lotus Elan. Later models were mainly engineered by Ford, and were called Ford-Lotus Cortinas. However, it did have a claim to fame as starting the trend for major motor manufacturers tying up with race engineers to re-vamp staid saloons, which carries on to this day. A ground breaker in it's day!