MCI is probably best known for its "Silverside" highway coaches that were a staple of bus transport for over 30 years, in fact MCI highway coaches being constructed from high grade steel had lifespans upwards of 35 years if other mechanical components were changed and maintained. MCI coaches were the most used models by the major bus transport carriers. Their coaches were synonymous with highway travel for years.

MCI has always maintained a majority market share for highway coaches in North America, leading only Prevost of Canada. This near monopoly of the market has led to repeat customers for decades. MCI's next generation of highway coaches include improved safety enhancements such as strengthening of the bus frame as well as crosswind detection to prevent rollover accidents.

MCI's biggest competitor Prevost with Volvo assistance has gained a significant amount of market share. MCI also faces competition from European coach manufacturers Van Hool, and Setra K. This has caused MCI to rethink many of its design offerings which many considered bland and dull. Exterior styling is a very important aspect of Highway Coach acquisition, operators want their buses to amaze their passengers. This new thinking from MCI is reflected in its new flagship model, the J4500. In order to remain ADA compliant, MCI has begun factory installing Wheelchair lifts and securement stations as a factory option. Previously highway coaches didn't have this option and those that did had them installed by a third party at a high cost. MCI's philosophy of creating an interior that feels like a "plane on wheels" however has always been prevalent in all of its designs across all eras of its existence