thanks David for the lead to the video!
Simmons Machine Tool Corp spent a lot of time installing the Hegenscheidt U2000-400D Tandem Underfloor Wheel Lathe in the Wilson Carhouse for the Toronto subway cars... and this is the 1st I've ever seen or heard of such a machine that does work to railcar wheels.
The Wilson Carhouse opened for work in 1976 http://transit.toronto.on.ca/subway/5304.shtml
The Wilson subway yard has space for 262 subway cars, making it the largest yard on the Toronto subway network.
One bay over is a similar machine installed in 1996, but that isn't exactly what's needed for the Toronto Rocket subway cars. The vehicle's new design requires a wheel truing machine that can work within the manufacturer’s tight tolerances.
TTC and Buttcon construction company are currently working on expanding the Wilson wheel maintenance shop, turned to Simmons and it's sister companies in the NSH Group, as they also need a similar machine in the Ashbridge Bay Carhouse across town. The construction to build the new Ashbridges Bay Carhouse, a storage and maintenance facility for the TTC’s new streetcars, began in 2012.
Thanks to William Myers for the link and heads up! How can this be the 1st crossover between my interest in trains and machine shops? Huh!