Look at the design of car and tell on the basis of their design which car moves the fastest?

Determining which car moves the fastest based solely on design requires consideration of several factors such as aerodynamics, weight, engine power, and tire design.

1. Aerodynamics: Cars with more aerodynamic shapes (slippery, smooth designs) tend to experience less air resistance, allowing them to move faster. For example, sports cars typically have designs that minimize drag.

2. Weight: Lighter cars can accelerate more quickly and achieve higher speeds. This is why performance vehicles often use materials like carbon fiber and aluminum.

3. Engine Power: A car's engine power output, measured in horsepower, directly influences its top speed and acceleration. High-performance sports cars usually have powerful engines.

4. Tire Design: Tires designed for high speed offer less rolling resistance and better traction, contributing to a car's ability to move quickly.

5. Overall Design Features: Features like rear spoilers or diffusers can enhance stability at high speeds, maintaining control as the speed increases.

Without specifications or a visual comparison of particular car models, it is difficult to definitively say which car moves the fastest based solely on design. However, generally speaking, a car with a low, aerodynamic profile, a lightweight body, a high-output engine, and optimized tires would likely be the fastest.