A new "private club" commuter bus service will allow Melbourne's white-collar professionals to shun the unsavoury aspects of public transport but the business' founder has denied it will create a commuter class divide.

Next month the start-up company SuitJet will begin ferrying professionals in and out of the CBD every morning and evening.

SuitJet fans Murray Waterson and Sara Hale with cup winner Efficient. Credit:Justin McManus

After all, as one potential customer said at Tuesday's launch, "You never know who you're going to be sitting next to on the train".

The company has a fleet of three Mercedes-Benz customised coaches named after Melbourne Cup winning horses but could quickly expand that to 20 within a number of weeks, using surplus Dysons Bus Services vehicles.