I did 175km/hr(110mi/hr) in my 2005 Honda Civic, with the pedal to the medal for about 1 minute.My Honda Civic as an Si. But it has a very small 1.7L engine! When I tested it to see how fast I could make it go, I did it on a long stright strech at 2:00 in the morning.....so there were almost no cars...heheOh, one more thing, its got a V-Tech engine.