Mario Highway is the first track in the Mario Stage of Mario Kart Arcade GP. It's a beach themed track, with pictures themed around Super Mario Sunshine.
Mario Kart Arcade GP
The track layout is very simple. There are walls all around the edges, so it is near impossible to fall off the track. It seems to take place on a beach, with the Peach Cruiser in the background. Around the edges at the curve and starting line are pictures of Mario, Peach, and Bowser Jr., seemingly referencing Super Mario Sunshine.