Chuck,
I believe that is Bill Wuesthoff's transporter. They still have it. I saw it at VW fest here in town a couple of years ago. That's my dad in one of those shots too. He raced with him at a lot of the events.
Check out the spectator parking inside corner 14 up the hill to the bleachers north of the concession stand. Didn't need as much paddock when there were no enclosed trailers or motor homes.
Also, check out rows of standing spectators on many corners. Crowds got larger in the '60s. Couldn't see grass on many of the corners due to masses of spectators, especially corner 5.
That is super cool. The miracle of a portable power plant....Some things don't change (wrenching all night), but some things do (all drivers are courteous to each other).
Happy Holidays,
Steve Smyczek
#17 EP (unless "I register at 12:01 am Sam Moore is there)
Sponsor to Rob Coffey's 2012 last 2 races