Left behind...

I've blipped this Concorde model before.

Today's mono entry matches the left behind theme. Concorde was a wonderful technological achievement that proved that there was still life left in Franco-British engineering, however it wasn't a commercial or environmental success. Age and changing business pasterns lead to a premature demise - though it wasn't going to be viable to keep them up for much longer anyway... 

See also:
* Concorde
* Not blue and not a bell