It's Dale Jr's world and NASCAR is just living in it.

FOX's Chris Hoenig has this week's NASCAR preview:

The Dale Earnhardt Jr. farewell tour gets underway this weekend in Richmond, the first race since his retirement announcement:

(Earnhardt Jr.) "I just wanted the opportunity to go out on my own terms."

A chance he nearly missed when a concussion knocked him out of the second-half of last year's races...

For Kurt Busch, it's the end of the road for a legend:

(Busch) "To me there is nobody that will ever replace Dale Jr."

Green flag in the Toyota owners 400 set for 2 p.m. Eastern on Sunday. 400 laps around the 3/4 of a mile d-shaped oval.

Stage 1 ends after lap 100, stage 2 after lap 200...

And drivers and fans alike will notice the candy cane-painted barriers. Raceway officials painting the exterior walls with alternating red and white stripes to pay homage to the track's early days.

Elsewhere, a fine for Martin Truex Jr's crew chief... Cole Pearn docked $10,000 after a post-race inspection found an improperly installed lug nut on the No. 78 Toyota, which finished 8th at Bristol last week.

FOX in the Fast Lane, I'm Chris Hoenig, FOX News.

Follow Chris Hoenig on Twitter: @Chris_Hoenig