Before 4x4s became a sine qua non, what did people tow their horse trailers with? Well, er, cars.... So if it's cars, it might as well be a CX.
I remember loads of safe/default choice Volvo 1/245s used by the more boring and class-conscious English middle classes, a few battered Landy 109s, the odd titled or wealthy sort in a Range Rover or big Citroën and quite a few mad Matra Ranchos. But most just used their everyday larger (and less so) cars and just got on with it - Triumph 2000s, Dolomites, Avengers, Solaras, Marinas, bigger Renaults (seem to remember 20s and 30s were popular with horsey sorts) and Peugeots, Granadas, Cortinas, Carltons, Landcrabs, Cavaliers, Toyota Crowns, Jag XJ6s, Rover P5, P6s and SD1s and even a few strange Germans with painted metal interiors.
Lifestyle once meant a fitting a towbar, throwing wellies and warm clothes in the boot as well as your horse/sailing gear then getting on with your activity rather than trying so hard to look the part. The Rancho was a sign of things to come.