Beach Buggy Blitz, the latest mobile game by Vector Unit, uses Bullet for collision detection and rigid body physics.
Bullet Physics Library version 2.79
Custom car physics
Custom water physics
Fixed time-step at 60hz
Using single-precision floating point for performance, the infinite driving mechanic is achieved by keeping the player 'near' the origin. When the player reaches a certain distance threshold from the origin, the procedural track system steers the track creation back towards the origin.