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CONCORD, N.C. -- Every Thursday, we're going straight to the experts all across the Hendrick Motorsports campus to get your questions answered.

From drivers and crew chiefs to engineers, mechanics, pit crew athletes and more, every department is chipping in to answer fan questions sent our way on social media using the hashtag #WhyDoYouDoThat, with a new video posted each week.

This week, Chase Elliott details why drivers utilize hand signals to communicate on the track. Check out the video above.

Since the last time we checked in on our "Why Do You Do That?" segments, we've also gotten some expert answers from No. 48 team crew chief Chad Knaus, No. 24 team fueler Landon Walker, No. 24 team engineer Taylor Moyer and No. 9 team interior mechanic Jordan Allen.

Check out some of the recent episodes below, and catch all of them in the "Why Do You Do That?" playlist on YouTube.