They do.
I watched the Memorabilia auctions from 8:30 AM to roughly 10:30 AM central time today & the days before it too.
Click here to watch all the auction LIVE.
http://www.barrett-jackson.com/Live/Streaming/Video/93f04d0d-614b-4e1c-b4ca-c87d88b709c4

Collecting Vintage Sunoco