I'd just stay away from Mission: Space (orange) that one is a proven killer for unknown heart defects and people that ignored the signage. However, that said, if they are putting that sign out for Tomorrowland Speedway then they use the same criteria on anything that moves forward that isn't an omni-mover. Doctors advice in crucial, particularly if the Doctor has been to WDW and is familiar with the rides. However, by now I'm sure you have gone and hopefully all went well.