Sweet I found some in Sonic Riders,Outrun 2006 and Virtua Cop.
http://i.imgur.com/A077S.jpg
http://i.imgur.com/gVyZC.jpg
http://i.imgur.com/EI7zE.jpg
http://i.imgur.com/GpDHr.jpg

Those are fantastic! Never really think to look for little incidental details like that,I can't really think of a [Sega or otherwise] title that features something like that. D: