Whoah, I just figured it out. I needed to convert the landscape and make it editable by clicking C.

Hello,

So I have rigged a car as per the instructions found on the web, the only thing is it does not want to interact with the collision mesh, so that the wheels interact with the ground. Does anyone have any idea why that is?

Here is a recording of my setup: https://youtu.be/f5PlKrYNtGo

Thank you