[aerohead]

General Motors Laboratory,in 1981,published that 50% of a cars energy was expended in acceleration,and 67% of that energy was lost to braking (33.5% of total energy).
Stop-and-go driving consumed up to 100% more fuel than in highway driving.
With 25-gallons of gas,you could get:
Ten 40-mile trips
Sixty 4-mile trips
Ninety 2-mile trips
or one hundred 1-mile trips
In: Transportation Research Board Special Report 286,Tires and Passenger Vehicle Fuel Economy,Informing Consumers,Improving Performance,National Research Council of the National Academies,copyright 2006,ISBN 0-309-09421-6,153-pages:
For EPA City cycle,23.07% energy= Aero,30.77% energy = rolling-resistance,52.84% energy = braking.
For EPA HWY cycle: Aero = 55%,Rolling-Resistance = 35%,Braking = 10%