1 5 One Billion Views USFlag MaleIcon 2008 YouTuber

What's Inside? is a YouTube channel ran by father and son duo consisting of Dan (born: July 23, 1980 (1980-07-23) [age 40]) and Lincoln Markham (born: January 3, 2006 (2006-01-03) [age 14]). They are famous for cutting various things open and seeing what's inside in a kid/family friendly manner.

The channel has been on YouTube since 2008. Some of the things that they have cut open are: a MacBook, an electric bike, an olympic torch, a rattlesnake rattle, and even the YouTube Gold Play Button. They often make videos about Tesla‘s as Dan owns a Model X and a Roadster. They have also done videos with Play Buttons including going to where they make them. They were invited by Creator Insider. A lot of the time they are invited to see whats inside monuments like what's inside Washington monument or Mount Rushmore.

Their Family

Whats inside is a family frendly channel PG. That contains Dan, Leslie, Lincoln, Clair, and London. They built a 3.5 million dollar house and have 7 teslas which they show off in their YouTube. Whats inside family.


Dan and his family own a large amount of cars all of them being Tesla's. 

Dan owns

  • grey model X (not anymore)
  • black model X
  • blue old roadster
  • red old readster
  • cybertruck
  • next gen roadster

leslie owns

  • model X


  • Dan was born in Manila, Philippines while Lincoln was born in Prescott, Arizona.
  • Dan and Lincoln have collaborated with Studio C.
  • Dan  worked before Youtube as a pharmaceutical sales representative.
  • They are befriend with Zack and Cambry of the channel JerryRigEverything

Subscriber Milestones

  • 1 million subscribers: December 15, 2015
  • 2 million subscribers: June 4, 2016
  • 3 million subscribers: February 3, 2017
  • 4 million subscribers: March 10, 2017
  • 5 million subscribers: October 23, 2017
  • 6 million subscribers: September 16, 2018

Video View Milestones

  • 1 Billion Views: February 20, 2019
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