I picked one up recently, extended cab with suicide doors, 4x4, 4 cylinder motor and automatic transmission. Since breaking it in I'm getting 23-25 mpg. With 17 gallons I'm getting 400 or so miles on a tank, and with my 2 mile commute I've had to fill up about once every 5 weeks or so.
My last vehicle was a Corolla XRS, which had a 9600 rpm limit (Lotus Elise motor

) and a 6 spd, so the 4 cylinder truck is a different experience. It's bizarre accelerating up to speed and staying below 2500 rpms the whole time.
My current question is: What kind of gas cans should I use, to store in the garage, that could be thrown in the bed during an emergency for extra range? I'd like to have 15-20 gallons available. How would I secure the cans, just tie them to the tiedowns in the bed?