Thanks for the signature help!

Other mileage facts I've collected:

Approximate highway mileage:
80mph: 36 (AC on)
70mph: 41 (AC off)

The odometer reads 1.5% low, meaning I'm driving 1.5% further than the car knows about. Not a big deal, and probably very common in cars, but it also means:

- I'm figuring gas mileage 1.5% too low.
- My speedometer reads 1.5% too low (don't cut it too close for the speed traps).

(I figured all this out on a trip to South Carolina, where I-95 is flat with a high speed limit for 100+ miles)