Michael,

the plain fact is that for the most part, you should drive your vue as you would any other car. The main difference is when you are stopped at a light, you should keep you foot on the break. You will feel the gas engine quit, but it starts when you step on the gas pedal.
Depending on how long the light, and whether or not you are using the A/C or heat, you will feel the engine kick back on within a short time.

Other than that, just use, cruise control on the freeways and drive sensibly on city streets and you'll get the most out of your vehicle.

Curious... What mileage are you getting?

Jack