1970 GTO convertible - speedo 147 could have keep going - tires?
1971 Alfa Berlina - speedo 118 - broke timing chain; bent the cranks;
screwed the fuel injection system
rebuilt engine w/ webers - did 135 -
that was enough

1993 Seville - limited to 125
1997 Audi cabriolet limited to 125
2003 Jag X type "

2005 Crossfire 147 top down - having a blast! - it felt like it could keep on going!

of course all of this took place on closed roads - or race tracks!