I call shenanigans. The flight's 1.5 hours. Even if you showed up to the gate 1 minute before the flight, it's a 20 minute drive plus 5 minute walk at least and if you park in the outer lots, more than that. You're already at 2 hours if you're late and parked in the garage outside the terminal.
Well, I happen to have a detailed record because I had been asked by a friend (who was interested in flying to Chicago but was leaning toward driving) what kind of time elapsed between walking out my front door and arriving at the loop:
26 minute drive to airport
32 minutes walking from circle parking, getting through security, and waiting around
~5 minute taxi to the runway (I kind of forgot to pay attention at this point, but it wasn't a long taxi)
50 minute flight (1.5 hours?
31 minutes on the orange line
Just under 2.5 hours.
"It is not to my good friend's heresy that I impute his honesty. On the contrary, 'tis his honesty that has brought upon him the character of heretic." -- Ben Franklin