She tested the R68 for the French magazine "MOTORCYCLE" (issue 81/August 18th, 1952) and achieved a top speed of more than 160 km/h, proving that the R 68 was a true 100mph racing bike. Marianne Weber later achieved 162,895 km/h (101,24 mph) in a "flying kilometre" near the City of Waterloo in Belgium, 1954.
Imagine how fast she would have gone if she hadn't been risk-compensating for her almost total lack of protective clothing.
Pah, she's positively swathed in protection compared to Rollie Free:
http://motorcyclemuseum.org/halloffame/hofimages/Rollie_Free01.jpg
Seen here achieving 150.313 mph on a Vincent Black Shadow at the Bonneville Salt Flats.