Is it feasible to stay in Geneva for a few nights, then park at a long-term lot and take the train into downtown Chicago for a few nights. My 70+ years parents are considering doing this. They would drive to Geneva, but do not want to consider driving into the city. I've been checking on this for them. Any advice would be appreciated. It looks pretty simple to me, but I have no first-hand experience doing this. They have taken Amtrak into downtown and are familiar with catching cabs, etc. Thanks!