My alternator went out along I-90 East while heading to Ohare Airport. I randomly called RK Services and they were extremely helpful, even providing rental information over the phone. Additionally they helped make arrangements to get my family to their shop because there were too many people to go in the tow truck.
RK Services was busy but willing to squeeze me since I was traveling through. Once I showed up with my vehicle on the tow trucking, they immediately push my truck into the shop and began working. It took them less about an hour to get me in and out. Pretty impressive.