Works for me on Windows 10. Dropped out into the void at the edge of map. Then I noticed that the task is to follow waypoints.
I Know this game is a bit unfinished. It took me forever. I finally made a glitch effect on the car, you have to press R and restarts and shows off the effect.
I made everything Myself using Blender and Godot 3.1, except the music and sound effects.
It will probably run slow in browser especially if you're on a potato. Usually it won't run at all.