About Chris Expertise I know almost every paint scheme and car model year from about 2000 and up. Stuff I'm not good with includes; car setups, aero packages, mostly the actual racing, but I do know a lot about the paint jobs and car models.
Experience I have been designing real life NASCAR schemes for NASCAR computer games since about 2002. I know the placement of every little sticker on most cars. Even small things I notice, such as a different sticker on part of the car, and even what track the special paint schemes were used.
Answer The pit road order is determined by qualifying. The driver who qualifies first, gets to pick whichever pit stall he wishes, then the guy who qualifies last gets the last available stall. This is why the pole sitter usually picks the very last stall but sometimes will pick the first stall into pit road (Jimmie Johnson often does that, so he can be the first to get serviced and then have a better chance beating other cars out of the pits). This is also why the top 5 or so qualifiers pick an easy stall, like either the first or last stall, or one with an opening in the pit wall (garage access point) either in front or behind that stall so they don't have to risk a collision or getting blocked in. Hope that helps. If you get a chance nascar.com sometimes after qualifying or before the race (Cup race) will post the pit stall selections. I think they still do that, not certain, but if they do, check it out it's pretty cool.