What do you think of the 2004 Toyota Prius? How do you think that it compares to the Honda Insight? Does anyone own here own both a Honda Insight and a Toyota Prius? I heard that this car can run up to 20 mph on per electricity. Also that when Toyota made the car they sacraficed mpg to put a bigger engine in the Prius since so many Prius owners complained about the car not accelerating that fast. No matter how much Toyota may try they will never beat the Honda Insight as it is still the most fuel efficient car in the world.