Super Fast Cars

When I was driving to and back from Singapore, many MyVi cars overtook me. I think each journey was more than 5 cars. I don't really know how they do it, but when I tried to keep up with them, they seem to to be further by the second. I was actually driving around 130-140kmh during that time. There was once I wanted to see how fast the MyVi was flying so I decided to touch 150kmh, but they were still far ahead from me. Base on my calculation, I believe that they were flying around 160kmh and above. Most of the car's that overtook me is without modification.

So those of you who drive MyVi, tell me how fast your car's can really fly. Would like to really know.