Happy "Back to the Future" Day!

In the classic 1989 flick "Back to the Future II," Marty McFly and Doc Brown hop in their time-traveling DeLorean for a trip into the future ... all the way to Oct. 21, 2015. To celebrate, many in the NASCAR community -- from teams to tracks to sponsors -- took to Twitter to remember this iconic date in movie history.

More from FoxSports