For at least a dozen years, in Europe, all but the cheapest
car radios have a button which when pressed plays recordings
from the last 4 or so traffic reports. So, when getting into
your car, no problem if you have just missed the latest traffic
report: just push the button and it comes out of the RAM. (One
can hear a loss of sound quality due, I guess, to compression,
but this is no problem for speech.)