I've migrated the project to the latest Unity version. This will allow me to eventually implement an online multiplayer mode.
This is new territory to me, so it will take a while before it's ready to test it.
I've also added an extra difficulty setting for the Grand Tour mode and I've redone the track layout for the first stage. The desert scenery also got a slight update and a little performance optimization.
About performance: not sure if anyone noticed it in the previous update, but I've moved a big chunk of the code out of Unity's FixedUpdate loop. This change allows for a smoother gameplay at framerates higher than 50 fps, and hopefully, a more stable framerate below 50 fps.
And last: I've made a new demo based on the Grand Tour mode. You start in the upgrade selection screen and you get to do the 2nd race. (Hence the updated desert stage.)