In Mario Kart: Super Circuit, Rainbow Road includes jump pads that border most of the track. There's only one place that has a solid wall. It includes several boost pads as well. The clouds in it will drop stars that will make the player spin out upon contact.
This version contains heavy sampling off of the Super Mario Kart version, with the start/finish line moved, six new sections added, and the Thwomps removed, albeit with better graphics, and is easier. Shortcuts can be taken by using Mushrooms to bounce off of the yellow jump pads to land the other side.