This package contains low poly models that are very optimized assets. I have created a one sample Track scene .

Create your own Stunt Race Track using this assets package.
This package contains including:
Racing Track assets one FBX file (Tris :2386).
Textures : 1*1024(track assets), 1*512(water), ,1*512*256 (paperFx)
Obstacles with animation 8-prefabs
Track Path 7 prefabs
Particle effect 1 prefab
Each object has individual prefabs. Using those prefabs you can create your own Stunt Tracks.

NOTE: Package including only Stunt Track Mesh prefabs and particle effect. (not included gameplay as per video Karting microgame and post processing effects)