Well , as some people saw on wipeout hd videos thread , i joined problemsolver on zone 160 . So i can put some cool numbers here

Zone 160 means about :
110 laps
almost 27 minutes of playing
total distance of 549 km (341 miles)
Speed of 2004 km/h (1245 miles/h)
and 1 136 548 343 speed pads (lol don't know if this is my ps3 , but that number become bugged after zone 146-147)

and that was my best feeling ever on zone mode . zone 150 to 160 are so exciting , but problemsolver is right , u must don't have any cardiac problem , i remember i could feel clearly beatings of my heart ... disturbing