[quote name='EliotAndrews']I didn't even notice they discontinued Outrun 2006. Can you still continue to download Outrun 2006 off Steam's servers if you delete it?[/QUOTE]
Of course. They just can't sell it anymore.
I'm almost entirely sure that the reason OutRun is no longer available for purchase, is because Sega's licenses for some of the real-world corporate logos on the in-game billboards probably expired, and they're too lazy (or somehow unable) to go and remove them.
Seeing as VT2009 is only a few months old, I don't think the licenses will be expiring so soon, so, I wouldn't worry about it disappearing after this sale, or whatever.