Living in the Lehigh Valley area, and driving to EWR on occasion (as well as working (when not traveling) halfway between ABE and EWR, I can tell you that, depending on the time of day, and how fast you (or the bus/plane driver) drive it can take from 1:00 to 1:45 to get to Newark Airport. For what it's worth, when traveling on CO, I either connect thru CLE out of ABE, or just drive to EWR to start my itinerary. I just can't see getting in a "bus" for 500 miles - and I would think that it is a very expensive bus ride? Happy travels.