My daughters are embarking on a cross-country drive in a few weeks and I just realized that they will be hitting turnpikes on their route (IN + OH and possibly PA + MA). It would be great to anticipate the cost and method of payment. Will they need an ashtray full of coins and bills, or can they use a credit card? Neither possesses an EZ Pass. Does anyone know of a great app that provides this information? They've already determined that avoiding toll roads would add many hours to their drive so they are resolved to pay the devil. Thanks.