Yes, you read that right. I've spent 3 years behind the wheel of my '05 and now '10 prius, and I've babied the throttle and brakes the entire time (often with spectacular results). The highest mpg tank I've recorded to date was 56 mpg in my '10 during its first tank. Now I'm interested in another record. Just how low can someone really get their MPGs in one tank? I'm going to attempt to find out. My gas gauge is down to one pip, and tomorrow I will fill up. I plan to accelerate quickly from stop lights and stop signs, brake later than usual, make plenty of short trips and speed excessively on the freeway. I don't plan on punishing the car, I just want to see what kind of fuel economy a really aggressive driver could expect from it. This little test will last one tank, and it will take all of my will power not to pulse and glide late at night through my neighborhood, but I think it will make for interesting results. I'm not going to be very scientific about it; I'll just be using the computer MPG readout and skipping any calculations. It's just for fun, just this once. Call me crazy and wish me luck!