I'm reading Paul Pietrak's Buffalo Rochester & Pittsburgh Railway (c. 1992, Second Ed.) and find that the road owned two streamlined gas cars. In 1910 they ordered the Comet (#1001) from McKeen and in 1911, the Meteor (#1002) from GE. While the GE gas electric was an improvement over the mechanical drive McKeen, neither car distinguished itself in reliability. By 1917, both were off the roster, replaced with conventional steam trains.
The railroad museum in Carson City NV has a fully restored operational McKeen and offer rides around their site, usually on holiday weekends. It is very impressive.