The Electric Can Opener Fluctuation - S3-E1
Corrected entry: At the end of the episode, Sheldon runs off to Texas. That would be impossible in the short time frame the episode was set in. Especially since they live in Pasadena, California. California is 18 hours away by car from Texas. It has also been stated previously that Sheldon dislikes cars and airplanes a lot.
Correction: Just because he dislikes planes, doesn't mean that he will never go on one, as proven by him traveling by plane to Texas with Howard.
Greg Dwyer
Yes! Also on Young Sheldon, when he goes to Pasadena with his dad to visit CalTech, when he visits Amy in New Jersey, and when he goes with Howard to the Space Station in Houston. And lastly, Sweden.