Bit late to the party but as luck would have it I'm researching one of these at the moment.
That monorail coaster with the upside down triangle track operated for ages (I am unclear if its the same one as Eclaire or a different installation). It was still running in 2007 in the south of France. And was built by Mack of all people.
It ran at Pirat' Park and the nearby Luna Park for a while under the name R2000.
Here are some shots from a trip report there in 2007
Trip Report (in French)
https://forum.coastersworld.fr/les-trip-reports/(tr)-r2000-et-europark-vias-plage-2007/
A second model existed in the USA and was a racing version. It ran at Playland in Jacksonville Beach in Florida in the 70s and I believe was at the Texas State Fair at least once.
Here is a shot of it in Jacksonville Beach
Photo credit
Kenny Rutherford
The Jacksonville Beach one is an Elusive little Bu**er. That is the only shot I have seen so far.
I'll post more if i dig anything up though.