Depending on how long ago it was, it could've been John Madden. Not a tycoon, but the first guy that pops into my head re: sports who refused to fly.

Didn't he famously have a very fancy bus?

	▲	RankingMember 5 days ago \| parent [-]
		He did, the "Madden Cruiser": https://www.profootballhof.com/news/2018/07/original-madden-... He was known for taking trains as well, e.g. he was a frequent Amtrak rider: https://vault.si.com/vault/1980/11/17/clear-the-tracks-for-b...