In a number of ways, the Honda Insight is very similar to the Toyota Prius, especially from the side profile. The original Insight from the late-'90s was the first mainstream hybrid to hit US dealerships, even before the Prius. It was a weird-looking 3-door hatchback that looked like it needed training wheels. Honda attempted to make the car as aerodynamic as possible, and in the process, probably alienated certain prospective buyers. However, in the latest iteration, the Insight looks mainstream, yet refreshingly futuristic.
Compared to the Prius, the Insight accelerates slower, but neither car is fast by any means. The Insight's engine sounds like a lawn-mower and accelerates at only one speed - slow. However, you're not buying a 5-door hybrid for performance; you're buying it for gas mileage, status, and for the environment (all worthy causes in my book). The Insight's regenerative braking is an awesome idea that all cars (including gas-powered ones) should have, and it makes for fairly responsive braking.