In the mid '70s I made a towbar to fit the Flavia Vignale, which was my everyday car at the time. This was to enable me to tow a trailer carrying an Austin Seven to the Nurburgring, to race it. It turned out to be a really big job, as there wasn't much bodywork that was strong enough to attach the brackets. We did finally make it and I was most impressed with the Flavia's fuel economy, which hardly noticed the trailer and two biggish (and one not so big) blokes. No matter what I did to that car, it always returned about 30 mpg. The Flavia survived the trip with flying colours, but the trailer had to be repaired in one of the BAOR workshops in Germany, as it tried to break in half.
Regards, John