Wow, I haven't seen this thread in a while lol
Still, even with different sports and super cars, the fastest I've been online, at a dead sprint down the airport runway is 138 in my Rapid GT. And there was no more gear to be had, no more push from the engine.
Face it, speed is broken in this game. A lot of things are broken.
If you place your marker on Paletto Bay from the docks in LS, it's only like 7 miles. Seriously. 7 miles? How about 70? Something more realistic. If Paletto Bay is only 7 miles, then a city block is like what, 30 feet? That would account for this laughably lame speed concept this game boasts.
I popped in Forza 4, and grabbed a Ford Fiesta Zetec, and with it maxed at a lowly speed of 105 it felt every bit as fast as the super cars in this game.