For those driving from the East, it would be advisable to make a pit stop at the last rest stop on the Indiana Toll Road - according to Rand McNally, construction is still going on I-80/I-94 south of Chicago.
Also, tolls on the Illinois Taxway have increased from forty cents to eighty cents per Toll (a total of $2.40 for the three tolls) according to the Taxway's Web Site unless you have I-Pass which is, apparently, good only in Illinois.
Hoping that the Web Site is incorrect, Tim Gilbert