Not absolutely sure, but it appears that around 70mph, the ct200h is outstanding. For what it's worth, consider:
YouTube - The CT200h with Michelle Thoreson
Was that the gray leather interior? I thought the yellow cars only got black for a leather choice? I better check again... haven't seen a gray leather interior in this one before...I work with her (the driver) and the fella that shot the video....There's not an issue at 75+. IMO the car fells very stable at those speeds in sport mode.