When they began their cross-country bicycling trip eight weeks ago, Bobbi Montgomery and Alice Honeywell were concerned about bears, rattlesnakes and varmints invading their food supply. But so far, the biggest headache has been Michigan drivers. They are by far the worst drivers of all the states weve traveled, Honeywell remarked. They pass no matter what, even on a double line going up a hill. We saw a couple cars have to hit the ditch.