Yes, they can lift a Greyhound but they only lift by the wheels. So you position each individual lift at each wheel, connect the lines, lift the vehicle, then have to put 4 industrial sized(and weighted) jack stands under it. Then you have to lower and disconnect the 4 wheel lifts because it's like a damn spiderweb to work around. Then repeat to get it back down. I would spend more time setting up and breaking down the lift than I would doing the actual work.