Well not the Buffalo Springfield. I did see an old Buffalo-Springfield steamroller today at the Antique Gas & Steam Engine Museum in Vista CA:
The parade MC said that the Buffalo-Springfield was one of just a few remaining working examples of something once so commonplace that it gave rise to a verb: "to steamroll".
And the band really did take their name from that machine. So there's this:
That's Neil Young plucking those harmonic pings in the background. You can see him behind frontman Stephen Stills in the very beginning and again when it cuts out at 1 min 13 s. Sorry that the video cuts out like that. If anybody knows a better link to the whole Smothers Brothers version of the song, please link in the comments.