I like my toys to have high MPH and low MPG!
1966 Mustang Convertible, 289 2V, Auto, unknown gears - MPG?, MPH? Haven't put a full tank through it yet.
1975 F250, 390 2V, Auto, 3.31 gear - 7-10 MPG, 105 MPH so far.
2014 GMC Denali HD Z71 w/ 6.0L gas... 10-14 MPG empty, 5-8 MPG towing. GM...