Trains work well for short distances. The commuter rail from Baltimore to DC for $7, and 45 minutes is great. But if you're traveling 3+ hours, it's probably

Trains work well for short distances. The commuter rail from Baltimore to DC for $7, and 45 minutes is great. But if you're traveling 3+ hours, it's probably cheaper to fly. I recently rediscovered another underappreciated mode of transportation: the bike.