A test of the Keeway V-Cruise 125 on a three lane road Vs country road driving.
I conclude that the bike can do about 60mph quite easily but the noise is horrendous and you wouldn't want to be so close to the limit for very long. Anything above 60mph or about 10 minutes of going along a major road and it would be quite uncomfortable noise wise and not very wise!
The bike is much happier going around country roads taking in beautiful scenery at a reasonable pace.