It was thought that the sky minecart provided the best self-stability. As it turns out, this one is even better! In this build I add a cannon to aid climbing and provide speed bursts. It's an optional addition as it does effectively disable reversing and complicates some other tasks but this particular minecart is ideal for granting protection from the blast with its high rear end. (It also has a high front end.)

Self-stabilizing - 0:00
Drive demo - 1:21

My original minecart showing:    • Sky Minecarts Are SELF-STABILIZING Wi...  
Playlist:    • The Legend of Zelda: Tears of the Kin...