Worried about carbon emissions from airplanes but still want to travel around the country? Embrace your inner Greta Thunberg with a new offer from Amtrak. The national rail service will let you bring a friend along on your journey for free with a buy-one, get-one deal running until January 12. Fares start at just $82, with trips needing to take place between February 1st and June 12th. Travel + Leisure notes that for longer voyages, upgrades to sleeper cabins can be made, which might even come with complimentary meals.