Decades ago? <a href="https://www.amtrakvacations.com/trip-planning/auto-train" rel="nofollow">https://www.amtrakvacations.com/trip-planning/auto-train</a> for example. See also <a href="https://en.wikipedia.org/wiki/Motorail" rel="nofollow">https://en.wikipedia.org/wiki/Motorail</a>.