Driving to Hohenzollern Castle

Hello all, I am visiting Stuttgart by myself this week and on Saturday am planning to drive to Hohenzollern Castle. Is there anything else out worth checking out while I'm out there with a car? I'm a little nervous taking to take the drive as I am a solo 40 year old American and know about 10 words of German (working on it). Any recommendations would be great, I'm up for anything. Thanks again.