Automatic Door

An Automatic Door appears in Checkpoint 10 Stage 2, Checkpoint 11 end of stage 4, (Checkpoint 11's Mayhem Boss in Mayhem Mode), Local Multiplayer, Smash Hit - Official Trailer, and Smash Hit VR in the Introductory Stage and Checkpoint 3 stage 2.

They need no buttons to open, instead detect where the player is, and if close enough, the door will open. You can never crash into them.