Apparently the Chicago auto show is the biggest auto show of the year (not to be confused with the most influential!). In this case, it's the largest by square feet of display.
From the Shows Website:
First staged in 1901, the Chicago Auto Show is the largest auto show in North America and has been held more times than any other auto exposition on the continent. This year marks the 108th edition of the Chicago Auto Show.
Attend virtually here.