Full Screen Gallery Image number 1

Full Screen Gallery Image number 2

Full Screen Gallery Image number 3

Full Screen Gallery Image number 4

Full Screen Gallery Image number 5

Full Screen Gallery Image number 6

Full Screen Gallery Image number 7

Full Screen Gallery Image number 8

Full Screen Gallery Image number 9

Full Screen Gallery Image number 10

Full Screen Gallery Image number 11

Full Screen Gallery Image number 12

Full Screen Gallery Image number 13

Full Screen Gallery Image number 14

Full Screen Gallery Image number 15

Full Screen Gallery Image number 16

Full Screen Gallery Image number 17

Exclusive access: Next Gen Cup Series test at Fontana

NASCAR Placeholder Image

Saved to `My Liked Photos`

1 of 17

View Fullscreen

William Byron and crew chief Chad Knaus stayed behind after Sunday's race at Auto Club Speedway to test the Next Gen car. NASCAR.com was on hand to capture a behind-the-scenes look at the test. Click through to see a glimpse of the future.

NASCAR Placeholder Image

Saved to `My Liked Photos`

Alejandro Alvarez | NASCAR Digital Media

2 of 17

View Fullscreen

NASCAR Placeholder Image

Saved to `My Liked Photos`

Alejandro Alvarez | NASCAR Digital Media

3 of 17

View Fullscreen

NASCAR Placeholder Image

Saved to `My Liked Photos`

Alejandro Alvarez | NASCAR Digital Media

4 of 17

View Fullscreen

NASCAR Placeholder Image

Saved to `My Liked Photos`

Alejandro Alvarez | NASCAR Digital Media

5 of 17

View Fullscreen

NASCAR Placeholder Image

Saved to `My Liked Photos`

Alejandro Alvarez | NASCAR Digital Media

6 of 17

View Fullscreen

NASCAR Placeholder Image

Saved to `My Liked Photos`

Alejandro Alvarez | NASCAR Digital Media

7 of 17

View Fullscreen

NASCAR Placeholder Image

Saved to `My Liked Photos`

Alejandro Alvarez | NASCAR Digital Media

8 of 17

View Fullscreen

NASCAR Placeholder Image

Saved to `My Liked Photos`

Alejandro Alvarez | NASCAR Digital Media

9 of 17

View Fullscreen

NASCAR Placeholder Image

Saved to `My Liked Photos`

Alejandro Alvarez | NASCAR Digital Media

10 of 17

View Fullscreen

NASCAR Placeholder Image

Saved to `My Liked Photos`

Alejandro Alvarez | NASCAR Digital Media

11 of 17

View Fullscreen

NASCAR Placeholder Image

Saved to `My Liked Photos`

Alejandro Alvarez | NASCAR Digital Media

12 of 17

View Fullscreen

NASCAR Placeholder Image

Saved to `My Liked Photos`

Alejandro Alvarez | NASCAR Digital Media

13 of 17

View Fullscreen

NASCAR Placeholder Image

Saved to `My Liked Photos`

Alejandro Alvarez | NASCAR Digital Media

14 of 17

View Fullscreen

NASCAR Placeholder Image

Saved to `My Liked Photos`

Alejandro Alvarez | NASCAR Digital Media

15 of 17

View Fullscreen

NASCAR Placeholder Image

Saved to `My Liked Photos`

Alejandro Alvarez | NASCAR Digital Media

16 of 17

View Fullscreen

NASCAR Placeholder Image

Saved to `My Liked Photos`

Alejandro Alvarez | NASCAR Digital Media

17 of 17

View Fullscreen

Presented By: