I'm envious of your evening. However, I don't know how old you are, but I was about twenty when C,S,N & Y were at Woodstock(I wasn't there, I was in another part of the world while in the Army). But I'm old enough to certainly remember the times.
Sounds like you did the right thing by enjoying one of your cars for the special occasion. However, it would probably have been more appropriate to find VW Microbus or a Psychadelically painted school bus.
Thanks for telling us about the great drive and the great concern.
'84 Euro 240D, 516K miles
'88 300E 5 Speed
Over 800,000 miles in