Megabus is offering free tickets on select dates from 1/8/20-2/29/20 throughout their network.
I was able to find multiple dates for free when I searched for bus rides between Cleveland and Chicago.
They do charge a $2.50 booking fee, but that covers all of the tickets you buy at the same time in your shopping cart.
Megabus operates double-decker buses with in-seat power outlets and free WiFi.
Have you traveled on a Megabus?