My ride 22+ mile ride into work (from start-up to shut down):
(and the cpu actually reads ~ 1% low against calculated two tank average )

4444703-85.7mpgwork.jpg (86 downloads)
1979 Dodge Lil' Red Express - 360 rwhp, 13.2 @ 103mph
1968 Coronet: 318, 2.76, 15.2 @ 92mph! (SOLD)
1976 Valiant: 360, 3.90, 12.90 @ 106 (SOLD)
1989 Shelby CSX #500/500