The "roller coaster" at Grace's gymnastics class is a HUGE hit! It wields all sorts of power.
Sit still and you can ride the roller coaster.
Wait your turn and you can ride the roller coaster.
Apparently, it's power even works on squirmy, don't-want-to-be-in-the-carrier-let-me-out-I-wanna-play-with-the big-kids infants.
She is definitely her father's daughter. No fear of these death defying contraptions!