NSTG8R
Elio Addict
Remember, that's 84mpg Highway, not all the time.
In city is 45 to 49mpg.
So unless you drive Highway and highway speeds every time you drive it; with no traffic, no slow downs; just constantly from the highway on-ramp at the end of your driveway to the highway off ramp to your parking spot ; plan on getting a little less than 84mpg 100% of the time.
I'm 1/4 mile from I-44, and Boeing has it's own exit off the highway [I-170] up near the airport that dumps right into my parking lot, with an entrance ramp from the parking lot directly onto the highway for the way home. The 1/4 mile of "city driving" will hopefully be enough to allow the Elio to warm up before I put the pedal down. 84mpg "should be" my average.