"JohnP" wrote in message
. ..
"Rod Speed" wrote in news:idblr2F4s2iU1
@mid.individual.net:

JohnP wrote

Quite simply - in a queue of traffic the cars should be like wagons on
a train. They close up when stationery and spread out when moving

Wagons don’t do that.

Imangine elastic couplings!!

No such animal, for a reason.