Lets keep in mind...it was built to be an F1 simulator...
and not actually run at F1 speeds or in competition.
I doubt it ever hit top speed...the power and performance specs are just based on the engine from an F1 car.
I'd liken it more to a theme park ride... it took Reporters and VIPs for rides around the F1 circuit.
So, 100kmh would probably have thrilled anyone who rode in it!
And then theres the liability risk.
The sound of the engine would have been enough for most.