Greyhound Lines is without a doubt one of the most recognizable intercity bus service carriers in North America. After all, it serves nearly four thousand destinations across the US, Canada, and Mexico. The company prides itself on its rich heritage and traces its roots to the first half of the 20th century when it was established in the 1910s. It’s been well over a century since, and Greyhound remains strong to this day. It is worth noting that the company offers discount rates to travelers having a Greyhound promo code.