The latest round of screens for Team Sonic Racing showcase the Boo's House track, which is based off of Sandopolis Zone and Pyramid Cave in Sonic & Knuckles. The track leads through an echidna's temple in the desert at night, and is filled with haunted statues swinging axes, quicksand and Boom Boo traps. King Boom Boo himself be seen lurking around the temple.
Along with that, SEGA has also shared some new screens for various Challenge Missions in Team Adventure. Ring Challenge has already been detailed, but two other Missions are mentioned as well.
In Daredevil, you have to drive as close as you can to posts set up on the track. The posts have yellow and red sides, and driving on the red side will increase not only the points you get, but the difficulty in handling. The closer to post you drive, the more points you get. If you hit the post, you lose your points.
With Egg Bomb (name may be incorrect) is a Challenge that involves littering the track with robot racers made by Eggman. There are 4 types of robot racers to take out, and each of them requires different tactics. This Challenge has a time limit, and you can add time to the timer by taking out the harder enemies.