That day i drove a suzuki kei 660cc turbo manual, it was very fast for its tiny engine, just like a bike, i touched 8,000rpms in no time, accelerator was very fluid but the clutch was quite hard, i did 80 - 90 km/hour in 2nd gear (i never drive like that, i had to check its turbo if it was working or not).
Compare Copen to Kei, Copen must be at least 100 kg lighter but i am not sure.